The Digestive System Explained

The Digestive System Of Digestion Essay
Digestion is the breaking apart of foods into smaller and smaller units and absorbtion is the movements of those small units from the gut into the
bloodstream or lymphatic system for circulation. (1) The digestive system is what keeps you going from day to day because without the digestive
system you wouldn't be able to consume anything. You also wouldn't be able to absorb the necessary nutrients you need for your body to keep
functioning correctly. The organs that play a role in the digestive system is the mouth, esophagus, stomach, small intestine, large intestine, appendix,
rectum, liver, gallbladder, pancreas, and the anal canal. The mouth is where it all starts. Before you even take a bite of your food, the smell of the food
is what triggers your salivary glands which include the parotid, sublingual, and submandibular glands in your mouth making it start to water. Your
saliva increases when you taste the food. When you chew the food into smaller pieces the enzyme amylase breaks food into small sugar molecules. To
start fat digestion another enzyme is released at the base of the tongue called lingual lipase. A bolus is easy to swallow and is formed when saliva and
other fluids in the mouth mixed with mucous. Bolus slides past the epiglottis and then goes through the esophagus and to the stomach where it is then
digested. The esophagus is a muscular tube connecting the pharynx to the stomach that is part of the upper gastrointestinal tract. (4) This organ carries
the
... Get more on HelpWriting.net ...

Comparing The Cardiovascular System And The Digestive System
I chose to write about the digestive system and the cardiovascular system. In the digestive system, the major organs are salivary glands, esophagus,
stomach, small intestine, large intestine, rectum and anus. There are accessory organs which are the liver, gallbladder, and pancreas. The major
components are the month, teeth,, tongue, and epiglottis. Food enters the mouth and the salvia starts the digestive process by starting to break down the
food. The teeth chew the food while the tongue is pushing the food to the back of the throat. When the food is swallowed the epiglottis keeps the food
from going down the wrong way. The food hen goes down the esophagus where it then goes to the stomach. Just before the food enters the stomach
there is ... Show more content on Helpwriting.net ...
When eating a meal the gallbladder then contracts which sends bile to the small intestine. Then the nutrients gets absorbed into the blood stream, there
is leftover liquid that passes into the small intestate. What food that is left over then travels to the large intestine. "The large intestine is a 5–6 foot long
muscular tube that connects the cecum which is the first part of the large intestine to the rectum and the last part of the large intestine". The large
intestine is made up of the cecum, which is the ascending right colon, the transverse colon, the descending colon, and the sigmoid colon, that connects
to the rectum. Stool, or waste left over from the digestive process, is passed through the colon by means of peristalsis, first in a liquid state and
ultimately in solid form as the water is removed from the stool. A stool is stored in the sigmoid colon until there is a movement to release the stool into
the rectum twice a day. When the descending colon becomes full it then empties the contents into the rectum. The rectum is an 8 inch chamber that
connects the colon to the

Digestive System
The Digestive system:
The stomach related framework is comprised of the gastrointestinal (GI) tract–likewise called the stomach related tract–and the liver, pancreas, and
gallbladder. The GI tract is a progression of empty organs participated in a long, bending tube from the mouth to the butt. The empty organs that make
up the GI tract are the mouth, throat, stomach, small digestive system, internal organ–which incorporates the rectum–and butt. Sustenance enters the
mouth and goes to the rear–end through the empty organs of the GI tract. The liver, pancreas, and gallbladder are the strong organs of the stomach
related framework. The stomach related framework enables the body to process nourishment.
Why is digestion important?
Digestion is critical for separating nourishment into supplements, which the body utilizes for vitality, development, and cell repair. Sustenance and
drink must be changed into littler particles of supplements before the blood retains them and conveys them to cells all through the body. The body
separates supplements from sustenance and drink into starches, protein, fats, and vitamins. ... Show more content on Helpwriting.net ...
Processing works by moving nourishment through the GI tract. Assimilation starts in the mouth with biting and finishes in the small digestive system.
As sustenance goes through the GI tract, it blends with stomach related juices, making substantial particles of nourishment separate into littler atoms.
The body at that point ingests these littler particles through the dividers of the small digestive system into the circulatory system, which conveys them
to whatever remains of the body. Squander results of assimilation go through the internal organ and out of the body as a strong issue called

The Digestive System Of A Human
Gabe Menuel. 8H
What does a digestive system do in a human?
A digestive system in a Human is designed to help the human process food into energy and nutrients which are utilised by various systems in the body.
The energy and nutrients are used to power and sustain the human being.
The digestive system consists of the gastrointestinal tract and other organs such as the liver, pancreas, and gallbladder. The GI tract has organs joined in
a long tube from mouth to anus. There are hollow organs including the mouth, esophagus, stomach, small intestine, large intestine and anus. Food
enters the mouth and passes to the anus through the hollow organs of the GI tract. There are also solid organs such as the liver, pancreas, and
gallbladder ... Show more content on Helpwriting.net ...
Saliva is produced by the salivary glands which are under the tongue and at the sides of the upper jaw.
The brain can also be tricked to produce by saliva on call, we did this in a science experiment where we rang a bell and then ate some WizzFizz which
is a sweet powder with some acids that make the month produce a lot of saliva. After repeating the exercise of ringing the bell and eating the powder
many times, we then rang the bell without getting any WizzFizz and found the brain still produced saliva each time the bell was rung.
Even though saliva is produced all the time, extra – and slightly different – saliva is produced for digestion for several reasons One is that it acts as
lubricant that helps while mashing up the food and for helping the swallowing process and another is that is releases enzymes that help break down the
food by chemical reactions that break bonds in the chemical molecules in the food. One of the main enzymes is amylase which breaks down big sugars
and carbohydrates to smaller sugars that are easily available to the body to utilise for energy. Carbohydrates are the sugars, starches, and fiber found in
many foods. Carbohydrates are called simple or complex, the simple ones include sugars found naturally in foods such as fruits, vegetables, milk, as
well as sugars added during food processing. Special carbohydrates are starches and fiber

Bear, Lion's Digestive System
A similarity that is present between the bear, lion, and koalas digestive system is that they all have small intestines. In all of the animals' digestive
system they have small intestine which absorbs all the nutrients and minerals from the food that they have eaten. Small intestine, or small bowel, is a
hollow tube about 20 feet long that runs from the stomach to the beginning of the large intestine. The small intestine breaks down food from the
stomach and absorbs much of the nutrients from the food.
The duodenum is the first part of the small intestine. The main role of the duodenum is to complete the first phase of digestion. In this section of the
intestine, food from the stomach is mixed with enzymes from the pancreas and bile from the gallbladder. The enzymes and bile help break down food.
The jejunum is the second part of the small intestine. After food is broken down in the duodenum, it moves to the jejunum, where the inside walls
absorb the food's nutrients. The inside walls of the jejunum have many circular folds, which make its surface area large enough to absorb all of the
nutrients that the body needs.
The ileum is the third part of the small intestine. It absorbs bile acids, which are returned to the liver to be made into more bile, then stored in the ...
Show more content on Helpwriting.net ...
The oesophagus is a muscular tube, about 25cm long, with a sphincter (valve) at each end. Its function is to transport food and fluid, after being
swallowed, from the mouth to the stomach. No absorption of nutrients takes place in the oesophagus. A mouthful of food which has been chewed and
swallowed is called a bolus. This is propelled from the pharynx (throat) into the oesophagus, and is swept towards the stomach in peristaltic waves.
These muscular contractions are involuntary, and cannot normally be felt. When food is not passing through, the oesophagus is folded in, or

Comparing The Digestive Tract And System
The digestive tract and system is a complex process where each section has its own enzymes to be produced in a specific order and relies on the one
being completed to carry out the next.
The first cavity is the mouth, where food digestion begins with the chewing of food into smaller and manageable molecules (mastication). The first
digestive enzyme is also released here in the form of salivary amylase which begins the breakdown of starch. It is the only point at which this enzyme
will be released, so if it is blocked, starchy products will not be broken down correctly.
Once food leaves the mouth, it travels down the oesophagus and into the second cavity the stomach. Here digestives enzymes are released such as
hydrochloric acid and gastric

The Digestive System : The Function Of The Digestive System
The digestive system has the function of digestion and absorption. This means that the digestive system breaks down food into small molecules that
will be absorbed and used by the body. But this process can only be completed with the help of multiple organs – the esophagus, the stomach, and the
colon, to name a few.
First is the mouth, where the salivary glands, tongue, and teeth are located (fig 2). The salivary glands produce saliva, which helps break down food.
The teeth cut and grind the food into smaller particles, with the help of the saliva the salivary glands produce. In addition, the tongue assists the teeth in
this process by combing the food and the saliva. Then, the tongue moves the food along to the pharynx and esophagus. Located deep to the tongue, the
pharynx allows the swallowed food and drink pass to the esophagus (fig 2). The epiglottis prevents us from choking, as it is located just under the
pharynx (fig 2). Moreover, the epiglottis ensures that the swallowed substances do not interrupt the gases oxygen and carbon dioxide from reaching the
lungs. Then there is the esophagus, which is inferior to the epiglottis (fig 4). The esophagus is a passageway that connects the pharynx to the stomach.
Together, the pharynx, epiglottis, and esophagus ensure that food does not take the wrong path – down the trachea into the lungs – and does enter the
stomach. The esophageal sphincter is deep to the esophagus (fig 4), and is used during eating, burping, breathing, and

Digestive System Journey
The digestive system is the process of turning food that we eat into nutrients that the body uses for energy. This system also creates waste that the body
needs to eliminate. We are now going to talk about the journey of food through the digestive system to see how everything works together to reserve the
nutrients of the food we take in everyday and how the body removes all the remaining substances from our body.
As I enter the mouth, there is already I liquid that the salivary glands have produced because of the scent of my delicious smell. The teeth begin to chop
and grind me up into smaller pieces and with the help of the saliva, it breaks down the chemicals that created from , making it easier for them to
swallow me. The saliva will help me through my twelve hour thirteen foot journey in the digestive system. The tongue then starts forming me into a
small ball like shapes, and once it begins contracting it sends me back into the pharynx, also called the throat, and into the opening of the esophagus.
The esophagus is a stretchy like tube that is about 10 inches long that I travel through to get to the opening of the stomach.
Once I reach the stomach, I am accompanied with other processed food. The stomach then used its gastric juices to make us thinner. We are now sitting
... Show more content on Helpwriting.net ...
What remains of us is now being moved into the large intestine through the ileocecal sphincter, which is a valve that separates the small and large
intestine and keeps us from going back to where we came from. What is left of us is a mix of waste that the small intestine didn't need and dead cells of
the wall of the gut. The large intestines main job is to remove all the water of our composition and is sent off into the bloodstream. Once the water is
removed, bacteria suuround us and produce enzymes that break down our complex carbohydrates that the body could not

Taking a Look at the Digestive System
The Digestive System is basically consist of organs that works together to help transfer food into energy to help nourish the body. The food then passes
through, what is called the Gastrointestinal Tract (GI Tract). The GI Tract's job mainly is to digest the food taken in, consume the nutrients and get rid
of waste. This process is an impactful part of the immune system, which plays an important role with helping fluid not to enter the blood stream that's
due to a sore or inflamed tissue. Gastrointestinal Agents which are also known GI Agents are basically a combination of diseases and/or disorders that
attacks part of the body such as the anus, liver, pancreas, bilary tract and the mouth. These agents are a part of many sub–classes of drugs such as H2
Antagonist; Laxatives; Antidiarrheal; GI Stimulants; Anticholinergic/Antispasmodics and also PPI'S (Proton Pump Inhibitors). The class of H2
Antagonist drugs which are also known as H–2 Blockers, are used to treat gastric ulcers, duodenal ulcers, GERD, or stomach bleeding.H2 Blockers
works to the effect of decreasing the amount of acid produced by the stomach. These conditions may cause pancreatic problems which is damage
caused by certain medications or even

The Digestive System ( Https )
Maureen Reid – Student I.D. REIM0115; Task M; Confirm Physical Health Status.
The Digestive System
Parts of the Digestive System (https://www.thinglink.com/scene/496007041890910209)
The digestive system comprises of multiple organs like the mouth, which consists of the salivary glands, saliva, tongue and epiglottis; the Pharynx,
Oesophagus, Diaphragm, Stomach, Spleen, Liver, Pancreas and the Lower gastrointestinal tract which includes the small and large intestine and the
caecum. The major role of this system like it suggests is to digest food. It digests and provides nutrients to the body and passes on the waste to the
excretory system to safely pass it out of the body. The Mouth breaks down the food into small components which are then accordingly absorbed and
assimilated into the body. The salivary glands secrete saliva which also helps in the production of bolus which makes the task easier and it is then
swallowed by the oesophagus and passed right down into the stomach. The saliva contains a catalytic enzyme called amylase which starts working on
the food in the mouth itself and digestion is also helped due to the mastication of the food by the teeth and muscular contractions of the peristalsis.
The term peristalsis refers to the rhythmic contraction of muscles that begins right up in the oesophagus and up till the walls of the stomach and the
gastrointestinal tract. Gastric juices and mucus in the stomach aid peristalsis and a smooth passage is provided to the food

Digestive System D2
D2 how the digestive system, cardiovascular system and respiratory system all link together
How the digestive system works? Food moves through the GI tract. Digestion starts in the mouth with chewing and finishes in the small intestine. As
food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules. The body
absorbs these smaller molecules through the walls of the small intestine into the bloodstream, which delivers them to the rest of the body. Waste
products of digestion pass through the large intestine and out of the body as a solid matter called stool.
How does cardiovascular system work?
The cardiovascular system delivers nutrients and oxygen to all cells in ... Show more content on Helpwriting.net ...
When a micro–organism has entered the human body, the goblet cells along the respiratory tract have the ability to produce a larger yield of mucous.
Mucous acts as a defensive because of the "sticky" liquid which has the ability to collect micro–organisms that bind with the substance. Cilia within the
trachea slide the mucous towards the entry of the oesophagus. The substance is then delivered through the tube and into the strong hydrochloric acid
present in the stomach. The respiratory system and the digestive system provide the diaphragm with key nutrients necessary to facilitate breathing. Both
the digestive system and respiratory system provide the key products to perform aerobic respiration. Both of these systems work together form the first
part of the equation; oxygen inhaled by the respiratory system and glucose which is broken down within the digestive system. When we eat food the
digestive system breaks in down from larger molecules to smaller molecules then part of the cardiovascular system transports the smaller food
molecules to the cells. The molecule when broken down can be broken down into glucose; glucose is need for energy to carryout normal body
functions. When glucose is broken down certain completed carbohydrates we can get starch from this we need starch for ATP energy which is found in
cells. So then the food molecules reach the cell the next stage is the respiratory system is need as we need to breathe in oxygen travels to the lungs
where the blood stream takes it to the

Digestive System Research Paper
Digestive system and Urinary System
The digestive system is a group of organs working together to convert food into energy. The food digested is also tied into basic nutrients to feed the
body. The digestive system is something called the tube within a tube. This is because it is a hollow structure with two openings that run the height of
your body. The digestive tract consists of two parts the gastrointestinal tract known as GI tract and a set of accessory organs. GI tract starting at the oral
cavity, through abdominal cavity and end at the anus. Major accessory organs include pancreas, liver, and gallbladder. There are 5 basic processes the
digestive system have. The processes include and ingestion, mixing digestion, absorption, and defecation. Ingestion is the first step which is when the
food and liquids are taken in the mouth and eaten. Mixing is when the smooth muscles in the walls of the GI tract mixes the food and send it through
the tract. Next is digestion where the food is broken down by mechanical and chemical processes. Absorption is the epithelial ... Show more content on
Helpwriting.net ...
It is composed of four layers: The innermost layer is composed of a mucous membrane, or mucosa . This slippery, smooth layer allows ingested food to
move along the tract without tearing it.  Under the mucosa, the submucosa includes the glands, nerves, and blood supply for the tract itself.
The muscularis gives the tract the ability to move substances lengthwise. For most of the tract, the muscula–ris is composed of one layer of longitudinal
muscle above another layer of circular muscle. The outer layer of the GI tract, the serosa , is a slippery membrane that permits the tract to move inside
the abdom–inal cavity without catching or causing discomfort. Your digestive system is always active, as muscular contractions shift, lengthen, and
shorten the tube. Although this move–ment is constant, you normally neither see nor feel

Digestive System Of The Digestive System
Digestive System After dissecting the rat, we learned that the rat's body has many complex systems. To begin, the digestive system contains a group of
organs that work together to convert food taken in from the body and converts it to energy and basic nutrients to feed the cells in the body. The
digestive system includes the mouth, pyloric valve or sphincter, caecum, small intestine, colon (large intestine), duodenum, retrum, and stomach. The
salivary glands, liver, and pancreas are glands that are laid outside of the digestive system, but they are associated with contributing to the system's
function. The mouth processes the food so that it is easier to swallow. From the mouth, it moves to the back of the mouth.
Pharynx
The pharynx is where the food moves into from the back of the mouth. It is separated into three pathways. The nasopharynx is a pathway for only air,
the oropharynx is a pathway for food and air, and the laryngopharynx is where both food and air pass by penetrating through the nose.
Esophagus
After successfully passing through the pharynx, it moves to the esophagus. The esophagus links together the stomach and the pharynx so when food is
consumed by the organism, it moves into the stomach.
Stomach
The stomach muscles work together to break down food so part of digestion takes place here. It also produces acids (hydrochloric acid) and enzymes
(pepsin) and mucus which work together to break down proteins. The stomach also functions to portion food into

The Digestive System And The Circulatory System
The Digestive System 1.1
The digestive system is comprised of a group of organs known as the alimentary canal, which is one continues tube that runs from the oral cavity to the
anus. The second set of organs that make up the digestive system are the Accessory organs.
The digestive system has six main functions: ingestion, secretion, mixing and movement, digestion, absorption, and excretion of food (Tortora &
Derrickson, 2009).
Alimentary canal
Organ Structure Function Diagram
Mouth The mouth is made up of the checks hard and soft palates, internally and externally covered with skin. The mouth is where food enters the body
and the process of digestion starts via mechanical and chemical digestion. oesophagus The oesophagus is a long tube ... Show more content on
Helpwriting.net ...
Salivary Glands The salivary glands surround the mouth. There are 3 sets of salivary glands. The saliva moistens the food to lubricate it as it passes
through the mouth; it also begins the process of chemical digestion.
Liver The liver is accessory organ of the digestive system which is triangle in shape. The liver is located to the right of the stomach and above the small
intestine. The main functions of the liver in digestion are production and secretion of bile into the small intestine.
Gallbladder The gallbladder is a pear shaped organ located just behind the liver. The gallbladder stores the bile and recycles any excess bile from the
small intestine.
Pancreas The pancreas is a fairly large gland which is about 15cm in length. The head is connected to the duodenum. The pancreas secretes many
different digestive enzymes into the small intestine via the duodenum to aid in the completion of chemical digestion.
(Tortora & Derrickson, 2009)
Diagrams from: http://www.innerbody.com/image/digeov.html
Enzyme Function of the liver and pancreas 1.2
The chyme arrives in the duodenum and the pancreas releases pancreatic juices packed with enzymes that break down fats, carbohydrates, and proteins
these are: Pancreatic lipase, amylase, and protease. Bile is then realised by the gall bladder – this bile is produced by the liver, with the gall bladder
being the bile duct – this helps to breakdown

The Digestive System And The Function Of The Digestive System
The alimentary canal is where the digestive system takes place; it has different components in order for food to be thoroughly processed. The digestive
system is composed of an enteric nervous system and has four layers of tissues; the mucosa, submucosa, muscularis externa, and serosa. Food enters
through the mouth and passes through the esophagus, stomach, small intestine, and the large intestine before exiting the body through the anal canal.
This occurs within the digestive system in four main steps; ingestion, where food enters through the mouth, digestion where food is broken down
physically and chemically, absorption where nutrients are taken to their desired organ for use in the body, and elimination where waste is removed from
the body due to being useless or toxic.When it comes to the human body there are plenty of components that we take for granted. Think about it, when
was the last time you dwelled upon the function of your saliva or pondered on the responsibility of the esophagus? If you are like me, the answer to the
question is simple, never. It is because our body is one of the greatest and yet most underappreciated machinery known to man. Within that system,
which tends to get a lack of appreciation, stands alone one main process that we utilize on a daily basis and rarely give credence to its importance. This
process is known as digestion, which occurs in the alimentary canal also known as the digestive system. The digestive system consists of the

The Digestive System Is A Unique Process Of The Digestive...
Nutrition BIO–151
Chapter 3 Digestion
Cheyenne De Jong
October 8, 2017
The digestive system is a group of organs that work together. It is responsible for taking whole foods and turning them into energy and nutrients to
allow the body to function, grow and repair itself. Today, I will explain how the digestive system performs this unique process. I'm having a loaded tuna
sandwich with lettuce, tomato, cheese and mayonnaise. The bread of my sandwich is mostly carbohydrates. Carbs are the sugars, starches and fibers
found in fruits, grains, vegetables and milk products. Carbohydrates contain macronutrients that provide fuel for the Central Nervous System and
energy for working muscles. The tuna in my sandwich contains mostly proteins and is also high in vitamin B12. Proteins are substances that have
amino acids, compounds, carbon, hydrogen, oxygen, nitrogen and sometimes sulfur and are found in many foods. They are essential in the diet for
growth and repair of tissue and can be obtained from foods such as meat, fish, eggs, milk and legumes. The lettuce contains fiber, carbs, and vitamins C
and A. The tomato also has vitamin C. My cheese has protein, calcium, vitamin B12 and also fats, or lipids. The mayonnaise is mostly lipids as well.
Lipid is another word for "fats". They are stored in the body as energy reserves and are also important components of cell membranes. As I take my
first bite, the sandwich enters my mouth. My mouth releases enzymes like amylase and

Muscular System Vs Digestive System
Thesis: We all have to eat and we all have to move or body. The Digestive System and Muscular System are two systems in the body that do a whole
lot. Digestive System breaks down the food you eat and Muscular System is all about movement.
The Digestive system is a major system. Think about if your body could not break down the food we eat, than you would not be able to eat anything.
The Digestive System is so amazing, it turns the food we eat into energy so that we can survive. The Digestive System contains the mouth, throat also
called the (pharynx), esophagus stomach and small intestine.
The mouth is where the digestive tract begins. The digestion starts here as soon as you take a bite of your food. By chewing your food it breaks the food
into pieces so that is easy to digest, and the saliva mixes with food to begin the process of breaking it down into a form that your body can take. The
throat also known as the (pharynx) is the next stop and from here; the food goes to the esophagus or swallowing tube. The esophagus is a muscular tube
extending from the pharynx to the stomach. By means of a series of contractions, called peristalsis, the esophagus delivers food to the stomach. ... Show
more content on Helpwriting.net ...
The stomach basically holds the food in; it is like a mixer and grinder. The stomach contains acid and powerful enzymes that continue breaking down
the food. When the food leaves the stomach it becomes paste or liquid, than from the stomach the food goes to the small intestine. The small intestine
contains of the pancreas, liver, and the gallbladder. All these are important systems in the digestive system. The pancreas is important because it breaks
down the fat, carbohydrates and protein from the food we eat. The liver is important because it has many different functions within the digestive
system. But liver makes up secrete bile and it cleanses it and purifies the blood coming from the small

Disadvantages Of The Digestive System
The digestive system is a severely underrated part of the human body. For most people, the digestive system is just something that gives them diarrhea
after they eat poorly. Little do they know, that the digestive system is the key part to fueling our bodies. The digestive system is how you break down
and absorb much needed nutrients. This is how we "fuel" our body. Our body breaks down the food we eat into manageable pieces, and then we are
able to absorb it into our bloodstream so that it can be distributed to the rest of the body. In order for this system to succeed in fueling this machine we
call our body, all of the parts have to act in unison. If the mouth and stomach can't break down the food properly, then the small intestine and large
intestine are unable to absorbs the proper nutrients to keep the body running. The same goes for the opposite, if the intestines cannot absorb the proper
nourishment. Any deficiency in nutrients can lead to many different types of diseases.
Diseases of the digestive system can be self inflicted or genetic. Some diseases that can occur due to malfunctions of the digestive system are: amoebic
dysentery, jaundice, and diabetes. Amoebic dysentery is a malfunction of the large intestine. Amoebic dysentery is a disease that is caused by an
amoeba infecting the large intestine, causing unmanageable diarrhea. This pesky amoeba causes the large intestine to quit absorbing water properly,
which leads to serious dehydration in the victim. The

Worksheet On The Digestive System
1. What is peristalsis?
2. What are the peristalsis and what are they used for?
3. What are the three salivary glands and where are they located?
4. Where is the uvula?
5. What are the two types of movement in the alimentary canal?
6. What are the three main function of the digestive system?
7. What is the name of the opening where the esophagus pass through the diaphragm?
8. What layer of the alimentary canal carries out absorption?
a. What layer covers the structure?
b. What layer contains the muscles?
9. What opens from the esophagus to the stomach?
10. The front teeth are called?
11. The central cavity of the tooth is made of?
12. What digestive enzyme is produced by the salivary glands?
13. What is food referred to after it has broken

Testing The Enzymes In The Digestive System
Alexandra Coffin
Literature Review
Rozak
10/20/15 Science Fair literature Review For the science fair project I have decided that I will test the enzymes in the digestive system on different food
groups which will be processed and unprocessed foods. The processed foods that will be tested will include Doritos Cool Ranch, Fruit Loops, Slim Jim
and the unprocessed foods are apples, spinach, carrots. This project divides into different subtopics the revolve around the project as a whole. The
digestive system is first a review of the system and it processes, then there are enzymes and how they work and finally the differences between
processed and unprocessed foods. The research led the reader to the basic conclusion that different enzymes ... Show more content on Helpwriting.net
...
"Saliva." The Gale Encyclopedia of Science. Ed. K. Lee Lerner and Brenda Wilmoth Lerner. 5th ed. Farmington Hills, MI: Gale, 2014. Science in
Context. Web. 26 Oct. 2015. url http://ic.galegroup.com/ic/scic/ReferenceDetailsPage/ReferenceDetailsWindow?
failOverType=&query=&prodId=SCIC&windowstate=normal&contentModules=&display–
query=&mode=view&displayGroupName=Reference&limiter=&currPage=&disableHighlighting=false&displayGroups=&sortBy=&search_within_resu
source #6 citation Richman, Jordan P. "Digestive system." The Gale Encyclopedia of Science. Ed. K. Lee Lerner and Brenda Wilmoth Lerner. 5th ed.
Farmington Hills, MI: Gale, 2014. Science in Context. Web. 26 Oct. 2015.
URL
http://ic.galegroup.com/ic/scic/ReferenceDetailsPage/ReferenceDetailsWindow?
failOverType=&query=&prodId=SCIC&windowstate=normal&contentModules=&display–
query=&mode=view&displayGroupName=Reference&limiter=&currPage=&disableHighlighting=false&displayGroups=&sortBy=&search_within_resu
source #7

Digestive System Lab Report
The purpose of this lab was to see how the digestive system length of my body compares with a rabbit, dog and koala. This is a dilemma to find out
without prior knowledge because of the small sizes of the animals and our large size in comparison.
My data shows the lengths of these animals and my own digestive system. I found my own digestive system length by measuring the body parts that are
associated with the digestive system. The measurements began at the mouth, where the digestion process begins. It is where the food gets crushed up
into smaller pieces for easier swallowing. In centimeters, we measured the length of our mouth from the jawline to the front of the mouth giving us 13.5
cm. Next we measured the next body part in the digestion system the esophagus. We ... Show more content on Helpwriting.net ...
The esophagus is what connects the mouth to the stomach which will be the next thing we will be measuring. The stomach was measured by using the
measuring the tip of our picky to the tip if the thumb, making it 17.0 cm. To find the stomach length we multiplied our height by 4 which gave me
630.8 cm because my height is 157.7 cm. The long intestine is simply your height which means my long intestine is 157.7 cm. If you total all of these
measurements up it equates to 840.2 cm making this the size of my whole digestive system. The next step in the lab was to measure the other animal's
digestive system. We did this by using yarn on a piece of paper that had a picture of the other animals systems in it. For all of the animals we traced the
system with a piece of yarn then measuring it. We measured the system using centimeters and excluding the length of the caecum. So we just measured
the length of the stomach, small intestine and the large intestine and later on added the length of the caecum with it. When I measured the rabbit, the
measurement of the major parts of the system was 63.0 cm and the caecum was 9.7 cm. We added that together making it equal 72.7 cm. I multiplied it

Digestive System Vs Urinary System
In exploring module 5, much information was able to be learned about the structure, function, and age associated changes or dysfunctions of both the
digestive system and the urinary system of the human body. Although through the exploration of this module, I have learned that the digestive system
and the urinary system are comprised of their own distinct features and functions, I would say the most significant knowledge I have gained from
module 5 would be that of the digestive system. More specically, the most significant knowledge that was gained of the digestive system itself, was that
of the actual digestive processes. The process of digestion is a complex series of activities including ingestion, propulsion, mechanical or physical
digestion, ... Show more content on Helpwriting.net ...
Ingestion is the act of food actually entering the alimentary canal through the mouth, where said food is chewed and mixed with saliva from the glands
in our mouth. The act of chewing and mixing the food with saliva initiates the digestion process, breaking down some carbohydrate with some lipids
and enables the food to be formed into a bolus so this food can be swallowed. After this first process, the second process of propulsion takes place,
which is accomplished be the act of swallowing the food itself and the act of peristalsis. Peristalsis moves food through the esophagus to the stomach
via alternating waves of muscle contractions in the esophagus, where once the food has made its way to the stomach by the process of propulsion the
next process of mechanical occurs in the stomach. Although yes, the act of chewing the food in the mouth is a form of mechanical digestion,
mechanical digestion also occurs in the stomach where the food is churned in order to be broken down even further and also occurs in the small
intestines where muscles continue to further break down the food into smaller pieces. As for chemical digestion, it has previously been mentioned that
this process initiates in the mouth via the breakdown of carbohydrates by enzymes in the

Essay on The Digestive System
The Digestive System
What are the main functions in digestion of the
a) mouth
b) stomach
c) small intestine
The mouth takes in the food and uses the teeth and the salivary glands do break down the food so it could move onto the next phase. The teeth chew
food while the salivary glands, liver, bile duct and pancreas produce digestive juices to break down food.
The stomach is a L shaped, organ situated on the left side of the abdominal cavity beneath the diaphragm. At either end of this organ is a sphincter
muscle which contracts and relaxes to control the movement of food in and out of he stomach. The stomach churns the food and releases gastric juices
to help break it down. ... Show more content on Helpwriting.net ...
The pharynx pushes the food down into the oesophagus also known as the food pipe. The oesophagus uses the process of peristalsis to propel the food
down towards the stomach. The stomach uses hydrochloric acid and pepsin to help with the break down of food the stomach churns the food for the
process of breaking down the food and then leaves the stomach in the form of chyme. This then enters the small intestine, this is where all the nutrients
in the food are absorbed. Also in the digestive process the pancreas and the liver also play a part. The pancreas releases hormone in the body via the
blood steam as well as that it also produces enzymes such as, Trysin– which digests proteins and breaks them down into amino acids,
Amylase– which continues the digestion of starch,
Lipase– which breaks down the fats into fatty acids and glycerol,
The pancreas also keeps a check on the amount of glucose in the blood. If the levels of glucose are too high or too low, it produces hormones that
stimulate the liver to adjust the balance. The liver has a number of functions such as,
Storing and filtering blood,
Secreting bile to help break down fat,
Detoxification of harmful substances such as alcohol, paracetomol and other chemicals into safer form,
Storage of

Dogs Digestive System
Dogs have a monogastric digestive system similar to that of a human, this means they have a one compartment stomach. Their gastrointestinal tracts
have not evolved to digest fiber well and can only handle it in smaller amounts. For all animals digestion begins in the mouth. Each animal has
differing dental make–ups, in order to fulfill their dietary needs. So carnivores often have particularly large canine teeth that are made for ripping apart
their prey. With that said, they are physically digesting food by chewing it into smaller pieces. Also since the food is infused with saliva, which has
enzymes in it, it breaks down even further. Next, the feed moves through the Esophagus, which is simply a passage to the stomach. Once in the
stomach, ... Show more content on Helpwriting.net ...
Each organ has a specific task that aids in the breaking down of food and absorbing of nutrients. Starting with the mouth, dogs have saliva, which is
mostly water, but may contain an enzyme that slightly helps called salivary lipase. For the most part though, saliva mainly moistens the food so that it
can travel easily to the stomach. There, the stomach secretes mucins, hydrochloric acid, and pepsinogen. Mucins create the protective lining of the
stomach and assist in the muscular lining's ability to mix the digesta. Hydrochloric acid and pepsinogen work together to lower pH, absorb vitamin
B12, digest proteins (such as chicken meal and fish meal). Dietary fats such as omega 3 fatty acids that are in fish oil would also be absorbed in the
small intestine. Now, at the beginning of the stomach is the duodenum which has Brunner's glands that protect its lining. Then bile is delivered from the
liver to help digest lipids. The pancreas also plays a role by producing enzymes that are essential for digesting starch, proteins, lipids, etc. So ultimately,
any protein residue from the two ingredients listed would typically be utilized by this point. Then the last step is the large intestine which is the main
site for water absorption. Certain products arrive in the large intestine and end up passing through because the large intestine lacks that ability to absorb
it. This is the case for long–chain fatty acids, microbial cells, and B vitamins. Having said that, the end result is waste matter, also known as

Human Digestive System
Human Digestive System
Single–celled organisms can directly take in nutrients from their outside environment. Multi–cellular animals, with most of their cells removed from
contact directly with the outside environment, have developed specialized structures for obtaining and breaking down their food. The human digestive
system is a complex series of organs and glands that processes food. It is a coiled, muscular tube (6–9 meters long when fully extended) extending from
the mouth to the anus. Inside this tube is a lining called the mucosa. In the mouth, stomach, and small intestine, the mucosa contains tiny glands that
produce juices to help digest food. This tube also includes the pharynx, esophagus, large intestine, and anus. ... Show more content on Helpwriting.net
...
At the junction of the esophagus and stomach, there is a ring like valve closing the passage between the two organs. However, as the food approaches
the closed ring, the surrounding muscles relax and allow the food to pass. We can also swallow the food upside down because the muscles around the
esophagus are strong enough to push the food up to our stomach.
The food then enters the stomach, a sack that receives the food from the esophagus. The stomach is located just below the heart. It has three mechanical
tasks to do. First, the stomach stores the swallowed food and liquid. This requires the muscle of the upper part of the stomach to relax and accept large
volumes of swallowed material. The second job is to mix up the food, liquid, and digestive juice (acids and enzymes – that help to break the food down
into a thick liquid or paste called chyme) produced by the stomach. The lower part of the stomach mixes these materials by its muscle action. The third
task of the stomach is to empty its contents slowly into the small intestine. Food usually remains in the stomach for about two hours.
After leaving the stomach the food enters the small intestine. The small intestine is a 20 to 25 foot tube that is coiled up in the abdomen. The center of
the small intestine is right behind our belly button. The most important part of digestion takes place in the small intestine. As the thick liquid food paste
travels

Difference Between Digestive System And Digestive System
What the digestive system does
The digestive system is when the body does to break down food. Firstly, it enters the mouth and is broken down by the teeth of the animal and saliva.
Then it travels along the oesophagus to the stomach. Then in the stomach for further breaking down, it is broken down by hydrochloric acid and
enzymes. The acid breaks down bacteria and the food material into smaller molecules. Once this is complete it then moves onto the small intestine.
Enzymes are secreted from the pancreas into here and bile from the liver which emulsifies fats. Nutrients from the food are absorbed into the
bloodstream. Then it moves onto the large intestines where water is absorbed to produce faeces waste. Then it is moved to the rectum to be released
from the anus. This is the basic digestive process of a monogastric animal, other animals are more complex and different processes happen.
Comparing ruminants and non–ruminants
A ruminant is an animal such as a cow which is a foregut fermenter and has four chambers for their digestion. They also regurgitate their food unlike
non–ruminants. Ruminants chew their food briefly before swallowing it first time. The first part of their digestion is the rumen which has specialised
bacteria to digest cellulose. They then regurgitate and re–chew the food, it is called cud and the cud returns to the rumen. They chew this cud for 6–8
hours per day whilst resting. This is an advantage compared to the horse because it means that the fibre is

Horse Digestive System
Horses are part of a digestion group known as the hindgut fermenters. Another example of an animal in this group is a rabbit. They are herbivores. Most
of a horses' diet contains; protein, fat, carbohydrates, starch and fibre.
(Picture above: Horses skull. Equine–dentist. No date)
When food such as grass or hay goes into the mouth the first stage is the teeth to grind down the food. The molars (orange) at the back of the mouth are
used for this. The incisors and canines (blue) are used to clip food sources at the stem. While the horse is chewing the production of saliva occurs. This
aids the food going down the oesophagus but also helps start breaking down starch.
When the horse swallows a valve called the epiglottis blocks off the air ways so the horse doesn't choke. The muscles in the oesophagus act much like a
vein, ... Show more content on Helpwriting.net ...
This is a drawback as poisonous foods and objects will stay in the body until its either digested or comes out faeces.
Once in the stomach (in the part called saccus ceacus) the food starts to be broken down. Pepsin (an enzyme) breaks down proteins and hydrochloric
acid to break down solid food. Food can spend up to 15 minutes to 24 hours in the stomach, depending on the size of meal. Surprisingly the stomach of
a horse only takes up 10% of the digestive system. Because of how small it is the horse must eat little and often.
After the food has gone through the stomach, it moves onto the small intestine. Food moves through it between 30 minutes to an hour. It is made up of
three parts. The Duodenum, Jejunum and the Ileum. The Duodenum is the start of the small intestine. This is where bile, salts (from the liver) and
pancreatic enzymes are to start to break down carbohydrates, proteins and fats. Due to horses not having a gall bladder the bile goes straight into the
small intestine. The bile is important at reducing the acid from the

The Digestive System Of The Human Body
In the human body, the human digestive system is used to process food one eats by digesting it into nutrients. The body use nutrients for energy,
growth, and cell repair, which are needed for humans to survive. This digestive system encompasses a long tube that runs from the mouth to the anus. It
contains structures and organs through which food and liquids pass as it is being processed into forms absorbable in the bloodstream. The digestive
system also contains structures through which wastes pass in the process of elimination and additionally, other organs that contribute juices necessary
for the digestive process.
The digestive system is initiated when a person smells food, which triggers salivary glands start to secrete saliva in one's mouth. While the person
begins chewing thus breaking down the food into smaller pieces, their saliva increases. As more saliva is produced, it begins the process of breaking
down food into different forms of the individual's body thereby absorbing it for usage. . In the digestive system, liquids are produced to help break the
food down further. By chewing the food more, a person is helping to improve their digestion.
One food has been broken down in the chewing process and swallowed down the throat, it enters the esophagus. The esophagus is a long tube that
extends from the mouth to the stomach. The esophagus lies behind the trachea and heart and in front of the spinal column; it passes through the
diaphragm before entering the

Digestive Systems And The Digestive System Essay
When choosing between what system to write about, I thought the digestive system would be a good topic because food is probably one of my favorite
things, not only cause it tastes good but because it gives me the energy to do all the things I need to do throughout the day. We talked in class about how
you should always get the nutrients from food and never from supplements, which I've always tried to do. So, what is the digestive system? The
digestive system is an assortment of organs that performs the process of digestion. The process of digestion involves food, containing nutrients, which
is eaten and broken down into different segments. The digestive system also works with additional important systems in the body such as the
circulatory system and the excretory system. The circulatory system receives all the absorbed nutrients through your body, and your excretory system
filters compounds from the blood stream and collects them in urine. This whole system is designed distinctively, with the ultimate goal of turning food
into the energy that you need to survive. The digestive system starts with the mouth and ends with the anus. (Studios, A. R, n.d)
The mouth is the very beginning of the digestive tract, and is literally where the first bite of food is taken. Chewing food breaks down the food into
little pieces, while saliva mixes with the food to assist with the process of breaking it down. After the food has been broken down, it enters the
esophagus, which is in essence,

Digestive System Lab Report
Script
Introduction: The digestive system is needed in order to break down food in order to be able to use the food as energy, and my group and I have
simulated the digestive process of a muffin.
Mouth:
In the mouth, mastication in the form of chewing takes place, which is a type of mechanical digestion. Mastication occurs when the teeth, with the
incisors simulated by the knife and the molars simulated by the motor and pestle, cut the food into smaller particles, which maximised surface area.
This allows the amylase enzymes in the saliva that are secreted from the salivary glands to more rapidly distribute and break down the starches in the
ball of chewed muffin. This is a type of chemical digestion. The tongue also helps to knead the muffin ... Show more content on Helpwriting.net ...
Villi are 0.5 to 1 millimetres in height and also contain micro villi, and since a bumpy surface has a larger surface area than a flat one, the villi allow
more nutrients to be absorbed at a faster rate.
The movements within the small intestines can be categorised into two types; segmenting contraction and peristaltic contraction. In segmenting
contractions, the circular intestine wall constricts allowing the chyme to be mixed and churned. Peristaltic contraction includes wave–like contractions
that pushes the chyme downwards.
6. Large intestine
In the large intestine, mucus is secreted to aid the transportation of chyme through the cecum, ascending, transverse, descending and sigmoid colon.
The water and salts are also absorbed as shown by the paper towel in the simulation, and this results in the chyme being converted into feces.
7. Rectum
The rectum is the continuation of the sigmoid colon, and it is here where the feces are stored until the defecation process is needed to dispose of feces
through the anal canal.
Conclusion: In closing, the food goes through the mouth, throat, esophagus, stomach, small intestine, large intestine and rectum, and convert from a
bolus to chyme to feces, before it has gone through the whole digestive system.

Structure And Functions Of The Digestive System
Task 1
Structure and functions of main and associated organs of the digestive system
The digestive system is one of the body's largest systems (about 8–10 metres long) and it is made up of a series of organs and glands. Its processes
include: food ingestion, enzyme secretion, digestion, absorption and defecation. Its organs form the gastrointestinal (GI) tract.
Main digestive organs:
Mouth (oral cavity):
Beginning of the GI tract, "the roof of the mouth forms the hard palate, which leads into the soft palate. The floor is covered by the tongue" (Canadian
Cancer Society, 2015). It also contains the teeth and the salivary glands. A mucous membrane consisting of stratified squamous epithelium lines and
protects inside of the mouth.
Functions:
Both mechanical and chemical digestion begin in the mouth.
The tongue and teeth mechanically break food into smaller pieces through process of mastication, salivary enzymes in the saliva begin the process of
chemical digestion.
Pharynx (throat):
A Muscular tube which connects the posterior end of the oral and nasal cavities to the oesophagus and larynx. It consist of three parts: nasopharynx,
oropharynx and laryngopharynx. Because of its dual functions, pharynx consists of a flap of connective tissue called the epiglottis which acts as a
switch allowing food passage into the oesophagus.
Oesophagus:
A fibromuscular tube about 25cm long, extends from the pharynx to the stomach and its mucous lining secretes a thick mucus that

The Digestive System : Main And Accessive System
The digestive system is a very important but complex system. It is made up of main and accessory organs, the main organs are the mouth, pharynx,
esophagus, stomach, small intestine, large intestine, rectum, and anus. The accessory organs are teeth, tongue, salivary glands, liver, gallbladder,
pancreas and appendix (Thibodeau and Patton's, 2012). Both, main and accessory organs have specific roles and functions which allow digestion to
happen efficiently. In order for the digestive system to make nutrients available to each cell of the body, the system uses various mechanisms. The
prime mechanisms of the digestive system are ingestion, digestion, motility, secretion, absorption, elimination and regulation (Thibodeau and Patton's,
2012).
The mouth the beginning of the digestive system, it is where food is ingested so digestion can begin in the GI tract. Teeth play a major role in ingesting
food. Though teeth may look like a simple structure in the mouth, it has a unique build for protection for chewing and ingesting food and liquids. Teeth
have three main parts the crown, neck, and root. The crown is the visible part of teeth, it is covered with enamel, which is the hardest tissue in the body.
Along with enamel teeth also have an outer shell called dentin. The center of teeth consists of connective tissue, blood lymphatic vessels and sensory
nerves (Thibodeau and Patton's, 2012). The neck of teeth joins the crown with the root, it is surrounded by gum tissue. The root is the

Digestive System Analysis
Anatomy and Physiology of the Digestive System
Mouth and Salivary Glands
The mouth, also referred to as the oral cavity, is the entryway into the digestive tract. The opening is formed by the lips, which guide food into and
contain food in the mouth. The palate forms the roof of the mouth and separates the mouth from the nasal passages. The uvula is important in sealing
off the nasal passages during swallowing. The tongue forms the floor of the mouth and guides food within the mouth during chewing and swallowing.
The major taste buds are also located on the tongue. (Sherwood 2013)
The first step in the digestive process is mastication, or chewing. This is the motility of the mouth which involves the slicing, grinding, tearing and
mixing ... Show more content on Helpwriting.net ...
Peristalsis is the successive contractions of a muscular organ, which moves gut contents along. (Henderson 2011) Peristalsis within the oesophagus
moves the ingested food down and into the stomach.
Stomach
The stomach is a saclike storage chamber found between the oesophagus and the small intestine. The stomach consists of three main portions, namely
the fundus, the body and the antrum. It is separated from the duodenum by the pyloric sphincter. The fundus lies above the oesophageal opening and
has a relatively thin muscular layer, as does the body of the stomach which is the largest portion. The antrum however, has heavier musculature due to
gastric mixing that occurs within the antrum. The body of the stomach is only for storage of ingested food and therefore the thinner muscle wall.
(Sherwood 2013)
The primary function of the stomach is for storage of ingested food during the consumption of a meal, and then regulating its release into the duodenum
(Smith & Morton 2001) at a rate that is optimal for digestion and absorption to occur. Moreover, the stomach has two other functions namely: Secretion
of HCl and enzymes to begin the digestive process, and the production of chyme – the only form in which stomach contents can be emptied into the
stomach. (Sherwood

A Summary System : The Organs Of The Digestive System
Overall, the digestive system is a remarkable system that begins with the mouth and ends with the large intestine (colon). There are many chemical and
mechanical processes that occur between the ingestion of food with the mouth and excretion of feces from the colon. Absorption of nutrients, motility
of smooth muscles, and secretion of fluids all take place between the beginning and end of this interesting system. Organs that line the digestive tract
are the mouth, pharynx esophagus, stomach, small intestine and large intestine, but there are also a few accessory organs. The organs that aid in
digestive help are the liver, gallbladder, and pancreas. The liver functions to produce bile, which helps to break down lipids in the small intestine, but
the gallbladder is the organ to actually store and secrete the bile into the duodenum of the small intestine. The pancreas has two functions in the body,
endocrine and exocrine. The pancreas's endocrine function serves the endocrine system, while its exocrine function serves the digestive system.
As the pancreas serves the digestive system, it secretes an enzyme–filled pancreatic juice into the duodenum to aid the small intestine in the breakdown
and absorption of nutrients from chyme (a mixture of food, saliva, and stomach acids). The enzymatic pancreatic juice is made by the secretions of
acinar cells and duct cells. Pancreatic amylase helps to digest starches, while pancreatic lipase helps digest lipids. Nucleic acids

Digestive System In The Digestive System
motility).
Digestive System (GI TRACT)
The digestive system is an organ system within animals, it's primary purpose is to break food down into nutrients, which can be absorbed into the body
to provide energy and expel the remaining waste as faeces and urine. The gastrointestinal (GI) tract consists of the pharynx, oesophagus, stomach, small
intestines and the large intestines all of which play a vital role in helping the body digest food and remove waste. Food moves through the GI tract via
peristalsis. Peristalsis is the contraction of the smooth muscles wall along the digestive tract which drives food into various compartments of the GI
tract. Peristalsis is initiated once food enters the oesophagus, food is then transported to the stomach, peristalsis then continues in the small intestines
where most digestion and absorption of nutrients into the blood takes place. Peristalsis ends at the large intestines, this is where majority of water and
some vitamins are absorbed from the remaining waste material (Tortora & Derrickson, 2013).
Oesophagus
The oesophagus is a muscular tube which transports food from the pharynx to the stomach. It is approximately 18–26 cm long, extending from the
upper sphincter to the lower sphincter, it's also lined with mucosa. The sphincters are normally closed as they act as valves. The upper sphincter opens
after swallowing to allow the entry of food into the oesophagus, whereas the lower sphincter is found at the entrance to the stomach. It opens

Compare The Regions Of The Digestive System
List the regions of the digestive tract and the accessory organs of the digestive system To discuss the regions of the digestive system, it seems more
reasonable to start superiorly and work my way down. The digestive system as a whole can be broken down into two regions called the alimentary tract,
and accessory organs (SEER, .n.d.) The Alimentary tract consists of the: mouth, pharynx, esophagus, stomach, small intestines, and large intestines.
The accessory organs are there to aid the digestive system and are the: salivary glands, liver, gallbladder, and pancreas.
The Alimentary Tract
The mouth which may also be known as the oral or buccal cavity is in charge of: food intake, mastication (chewing), chemical digestion, and
swallowing. ... Show more content on Helpwriting.net ...
The cheeks within the mouth are there to help move the food to the teeth for mastication. They are also responsible for the action of sucking, which is
what an infant uses to eat. The tongue not only has many taste buds but has many functions including the moving of food to the back of the mouth and
through the teeth like the cheeks, and to extract some foods after eating as well. Dentition, or as we call them "teeth," aides in breaking down food into
smaller pieces which increases the surface area of the food for break down further down the alimentary canal. The pharynx is there to initiate the
involuntary swallowing reflex and contains the epiglottis that prevents food from going down the trachea. There is an important process that I like to
think of as a snake motion called peristalsis that automatically propels food down the pharynx to the esophagus. Once in the esophagus it continues as a
passageway to the stomach going through an opening called the esophageal hiatus and meet the stomach at about T7 of the vertebral column (Saladin,
2015). The stomach could most definitely be its own discussion topic to I will be brief, it is separated into the: cardiac, fundic, body, and pyloric

A Report On The Digestive System
Andres Nogales
Professor Dr. Felton
Essay 1: Since this student had a bag of chips which is carbs and turkey sandwich which is considered protein and fat and water. The first stage in the
digestive system is ingestion when the student enters his lunch in their mouth. In this stage there is mechanical and chemical digestion taken place. The
mechanical digestion is take place by biting and tearing the food into smaller parts which would then be known as bolus. Chemical digestion is
occurred when the three salivary glands sublingual, submandibular, and paratoid gland that secretes saliva which contains amylase. Amylase is used in
this case to breakdown starch. In the mouth the carbohydrates and fat are broken down. In carbohydrates the starch and disaccharides are mixed with
the salivary amylase, and in fats the unemulsified triglycerides are mixed with lingual lipase. Once mechanical and chemical digestion is complete in
the mouth food continues its route to the digestive system going through deglutition. In deglutition the esophagus sphincter begins to contract in which
the tongue forces the bolus upward towards the hard palate making the bolus to enter the oropharynx. Once it enter the oropharynx in order to prevent
the bolus to enter the trachea the uvula and larynx rise upward and the superior esophageal sphincter starts to relax which would then allow food to
enter the esophagus. Once that occurs the muscles of pharynx contract making the bolus to travel down the

Essay on Purpose of the Digestive System
BIOLOGY 'S ASSIGNMENT
1/What is the purpose of digestion? * Break down food, absorb nutrient from food into body tissues and systems in body
2What is the name given to mammal only eat meat ? * Carnivores
3/What is the name of mammal only eat plant? * Herbivores
4/What is the difference between a fore–gut fermenter and hind–gut fermenter? Example?
Because plant cells have tough cellulose cell walls and herbivore are not able to digest, they use micro– organisms that live symbiotically to break
down cellulose in fermentation process into nutrients | Fore– gut fermenter | Hind–gut fermenter | Location of caecum | Carry out digestion in a
chamber– rumen, before the true stomach (abomasum). The ruminant stomach consists ... Show more content on Helpwriting.net ...
They can produce cellulose enzyme, which cannot be produce by cow's digestion. They help to break down cellulose into glucose. When cow have a
break, they regurgitate or "cud" food from their stomach back to their mouth to chew again and mixing with saliva. At that time, food partly broken
down by bacteria, mixed with bacteria and chewing again makes the cow gain nutrient from the food maximally. After chewing again, the food and
bacteria will pass to abomasum (the true stomach). The food will be broken down into nutrients and the cow can gain amount of protein from digesting
bacteria.
–The cow didn't have time to chew when they are busy eating , so "sitting quietly and chewing" help cow grinding grass again and again, make food
become smaller pieces. Also the food mixed with bacteria, the cow can maximise nutrient which they get from the poor– nutrient food(grass).
6. Compare the size and shape of the stomach of 3 mammals | Dog | cow | Honey possum | Size | Smaller than the cow, one–chamber stomachThe
stomach's volume takes 60–70% of the total capacity of digestive system | Biggest and longest in 3 mammalsFlexible wall to expand easily.The rumen
itself can contain liquid about 30 litres | Two–chamber stomachThe main chamber is 11mm in lengthThe second chamber is about half of the main one
* total size is about 16mm * smallest stomach in 3 mammals | Shape |

The Digestive Systems Organs Work
The digestive systems organs work together to help the body turn food into nutrients and energy. Food passes through the gastrointestinal tract (GI
tract). The GI tract is made up of the oral cavity, pharynx, esophagus, stomach, small intestines, and large intestines. There are accessory organs that do
not have food pass through them but those organs help with the digestive system. They include the teeth, tongue, salivary glands, liver, gallbladder, and
pancreas. The six major functions need to happen in the digestive system and they are ingestion, secretion, mixing and movement, digestion,
absorption, and excretion. (Taylor)
The oral cavity is the mouth. The mouth has the tongue, teeth, and salivary glands inside it. Once food has entered the mouth, teeth must chop the food
into small pieces. The food must be moistened by saliva before it can be push down the pharynx by the tongue and other muscles. There are about 32
small teeth in the body's mouth. The teeth are the hardest substance in the body. They are bone like and covered in a layer of enamel. Under the teeth,
the pulp, there are blood vessels and nerves. Teeth are made for grinding and cutting food into smaller pieces. The tongue is located right behind the
teeth and is made of muscles covered in a bumpy, thin, skin like layer. The tongue uses those muscles to push food to the back of the mouth for
swallowing. The mouth has taste buds on it. When food enters the mouth those taste buds send the taste information

The Digestive System Explained

Recommended

Recommended

More Related Content

Similar to The Digestive System Explained

Similar to The Digestive System Explained (10)

More from Stacey Wilson

More from Stacey Wilson (20)

Recently uploaded

Recently uploaded (20)

The Digestive System Explained