The document summarizes the process of holozoic nutrition in humans. It involves ingestion, digestion, absorption, assimilation and defecation. Digestion occurs in the alimentary canal which includes the mouth, esophagus, stomach, small intestine, large intestine and anus. Each part has a specific role like mechanical and chemical breakdown of food. Enzymes and secretions from various glands help break down macromolecules into absorbable units that enter bloodstream. Undigested matter is eliminated as feces through the large intestine and anus.
Presentation include Nucleus and its components like nuclear envelope, nucleolus, chromatin fibers, ultra structure of nucleus and its general functions.
Presentation include Nucleus and its components like nuclear envelope, nucleolus, chromatin fibers, ultra structure of nucleus and its general functions.
paramecium is a microscopic organism. it is an protozoan that comes under ciliates. they are even visible under naked eyes. Paramecium are unicellular organism they lives in aquatic environment. they are used as live feed for fishes.
Cyanobacteria are important in the nitrogen cycle.
Cyanobacteria are very important organisms for the health and growth of many plants. They are one of very few groups of organisms that can convert inert atmospheric nitrogen into an organic form, such as nitrate or ammonia.
The invertebrates, or invertebrates, are animals that do not contain bony structures, such as the cranium and vertebrae. The simplest of all the invertebrates are the Parazoans, which include only the phylum Porifera: the sponges.
Parazoans (“beside animals”) do not display tissue-level organization, although they do have specialized cells that perform specific functions. Sponge larvae are able to swim; however, adults are non-motile and spend their life attached to a substratum.
Since water is vital to sponges for excretion, feeding, and gas exchange, their body structure facilitates the movement of water through the sponge. Structures such as canals, chambers, and cavities enable water to move through the sponge to nearly all body cells.
paramecium is a microscopic organism. it is an protozoan that comes under ciliates. they are even visible under naked eyes. Paramecium are unicellular organism they lives in aquatic environment. they are used as live feed for fishes.
Cyanobacteria are important in the nitrogen cycle.
Cyanobacteria are very important organisms for the health and growth of many plants. They are one of very few groups of organisms that can convert inert atmospheric nitrogen into an organic form, such as nitrate or ammonia.
The invertebrates, or invertebrates, are animals that do not contain bony structures, such as the cranium and vertebrae. The simplest of all the invertebrates are the Parazoans, which include only the phylum Porifera: the sponges.
Parazoans (“beside animals”) do not display tissue-level organization, although they do have specialized cells that perform specific functions. Sponge larvae are able to swim; however, adults are non-motile and spend their life attached to a substratum.
Since water is vital to sponges for excretion, feeding, and gas exchange, their body structure facilitates the movement of water through the sponge. Structures such as canals, chambers, and cavities enable water to move through the sponge to nearly all body cells.
Adv. biopharm. APPLICATION OF PHARMACOKINETICS : TARGETED DRUG DELIVERY SYSTEMSAkankshaAshtankar
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These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
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Knee anatomy and clinical tests 2024.pdfvimalpl1234
This includes all relevant anatomy and clinical tests compiled from standard textbooks, Campbell,netter etc..It is comprehensive and best suited for orthopaedicians and orthopaedic residents.
Basavarajeeyam is an important text for ayurvedic physician belonging to andhra pradehs. It is a popular compendium in various parts of our country as well as in andhra pradesh. The content of the text was presented in sanskrit and telugu language (Bilingual). One of the most famous book in ayurvedic pharmaceutics and therapeutics. This book contains 25 chapters called as prakaranas. Many rasaoushadis were explained, pioneer of dhatu druti, nadi pareeksha, mutra pareeksha etc. Belongs to the period of 15-16 century. New diseases like upadamsha, phiranga rogas are explained.
Basavarajeeyam is a Sreshta Sangraha grantha (Compiled book ), written by Neelkanta kotturu Basavaraja Virachita. It contains 25 Prakaranas, First 24 Chapters related to Rogas& 25th to Rasadravyas.
Tom Selleck Health: A Comprehensive Look at the Iconic Actor’s Wellness Journeygreendigital
Tom Selleck, an enduring figure in Hollywood. has captivated audiences for decades with his rugged charm, iconic moustache. and memorable roles in television and film. From his breakout role as Thomas Magnum in Magnum P.I. to his current portrayal of Frank Reagan in Blue Bloods. Selleck's career has spanned over 50 years. But beyond his professional achievements. fans have often been curious about Tom Selleck Health. especially as he has aged in the public eye.
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Introduction
Many have been interested in Tom Selleck health. not only because of his enduring presence on screen but also because of the challenges. and lifestyle choices he has faced and made over the years. This article delves into the various aspects of Tom Selleck health. exploring his fitness regimen, diet, mental health. and the challenges he has encountered as he ages. We'll look at how he maintains his well-being. the health issues he has faced, and his approach to ageing .
Early Life and Career
Childhood and Athletic Beginnings
Tom Selleck was born on January 29, 1945, in Detroit, Michigan, and grew up in Sherman Oaks, California. From an early age, he was involved in sports, particularly basketball. which played a significant role in his physical development. His athletic pursuits continued into college. where he attended the University of Southern California (USC) on a basketball scholarship. This early involvement in sports laid a strong foundation for his physical health and disciplined lifestyle.
Transition to Acting
Selleck's transition from an athlete to an actor came with its physical demands. His first significant role in "Magnum P.I." required him to perform various stunts and maintain a fit appearance. This role, which he played from 1980 to 1988. necessitated a rigorous fitness routine to meet the show's demands. setting the stage for his long-term commitment to health and wellness.
Fitness Regimen
Workout Routine
Tom Selleck health and fitness regimen has evolved. adapting to his changing roles and age. During his "Magnum, P.I." days. Selleck's workouts were intense and focused on building and maintaining muscle mass. His routine included weightlifting, cardiovascular exercises. and specific training for the stunts he performed on the show.
Selleck adjusted his fitness routine as he aged to suit his body's needs. Today, his workouts focus on maintaining flexibility, strength, and cardiovascular health. He incorporates low-impact exercises such as swimming, walking, and light weightlifting. This balanced approach helps him stay fit without putting undue strain on his joints and muscles.
Importance of Flexibility and Mobility
In recent years, Selleck has emphasized the importance of flexibility and mobility in his fitness regimen. Understanding the natural decline in muscle mass and joint flexibility with age. he includes stretching and yoga in his routine. These practices help prevent injuries, improve posture, and maintain mobilit
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
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Pharma Pcd Franchise in Jharkhand - Yodley Lifesciences
Holozoic nutrition
1. HOLOZOIC NUTRITION
Most of the nutrient contained in food such as protein, lipid and carbohydrates are relatively
large molecules, which do not dissolve in water and cannot enter cell membrane. This
nutrient must be broken down to smaller unit, which can be absorbed and transported by
blood to the whole body. This is achieved through mechanical, chemical and enzymatic
reaction.
How food is process to extract its nutrient is call digestive system and occur in alimentary
canal. In human, alimentary canal is divided into six region: mouth, esophagus, stomach,
small intestine, large intestine and anal region.
1
2. PROCESSES IN HOLOZOIC NUTRITION
In general, holozoic nutrition involved the following processes :
a) Ingestion
Ingestion involved intake of
complex organic food (solid
and liquid)
2
3. b) Digestion
Digestion is a process of breaking large compl
and insoluble
molecules into simple, small and soluble
molecules. Digestion is
achieved through mechanical means (chewing)
of food into
smaller particles and hydrolysis by digestive
enzymes.
c) Absorption
Soluble smaller molecules
move from digestion zone to
the absorption zone where it
crosses the epithelial lining of
small intestine. There
molecules either enter the body
tissues or transported to other
part of the body by blood.
d) Assimilation
Assimilation is a process where
the molecules absorbed is used
to generate energy or used for
growth and repairs.
e) Defecation
Defecation is a process where
undigestible food, residue,
bacteria is expelled from the
body.
Function of human digestive tract
Nutrient can only be absorbed into the body when complex foods are broken down by
mechanical action of teeth and digestive tract muscle followed by enzymatic digestion
(chemical digestion) to produce simple and small molecules that can be absorbed into the
blood capillaries surrounding the small intestine. Enzymetic digestion for three food classes
(polysaccharide, protein and fat) is shown in table 4.1
Table 4.1 Enzymetic digestion for three food classes (polysaccharide, protein and fat) in
human digestive tract.
Polysaccharide Amylase Disaccharide Disaccharase monosaccharide
Protein Endopeptidase Polypeptide Exopeptidase Dipeptide Dipeptidase Ami
aci
Breaking long Aminopeptidase Breaking
3
4. chain of carboxypeptidase down
protein reacted on the dipeptide
end of carboxil into
polypeptidase amino acid
Bile salts Lipase
Fat Colloidal fat Fatty acid + glycerol
For
emulsification
Each part of the digestive system have a specific function as shown in table 4.2
Table 4.2 Summary of function in human digestive system
Specific region Function
Mouth cavity Ingestion, mechanical digestion
Pharyngx To swallow
Esophagus Linking pharyngx to stomach
Stomach Storing food and digestion of protein
Duodenum:
Liver (gall bladder) Fat emulsification
Pancreas (pancreatic secretion) Carbohydrate, protein and fat digestion
Illeum End of digestive process and start of
absorption process
Colon Absorption of water
Rectum Formation and storage of fecal matter
Anus Defecation
Stomach
Stomach surface lining is creased or crinkeled known as rugae Permukaan dalam perut
mempunyai lipatan-lipatan vang disebut rugae. Rugae membolehkan perut mengembang
untuk menampung kemasukan makanan. Fungsi perut termasuklah :
(1) Place for temporary
storage of food
(2) Secretion of gastric juice
(HCl) and enzymes
(3) Mechanical food mixing
(4) Control entry of food to
small intestine.
4
5. Thick mucosal layer are supplied with gastric gland and goblet cells. Gastric gland consists
of three type of cells
i) zymogen cells ii) oxintic cells iii) argentafin cells
These cells produced intrinsic factor which assist in the absorption of vitamin B12 complex
molecules.
Goblet cells produced copius mucous to protect intestinal lining against corrosive nature of
HCl and digestive protein enzyme.
Collective secretion of gastric gland and goblet cells is also known as gastric secretion.
Stomach muscle will churned (mixed) foods with gastric secretion and turned it into semi-
liquid state called chyme. After about 2-3 hours the chyme is released to the duodenum.
Small Intestine
Chyme enter small intestine in stages and mixed together with small intestine’s secretion.
There are three types of small intestine secretion:
i) intestinal secretion ii) bile secretion iii) pancreatic secretion
Most of the digestion and absorption processes taken place in small intestine. Chyme will
remain in small intestine for about 4-5 hours. When most of the nutrient are absorbed, the
remaining mixture will move to the large intestine by peristaltic action.
Table 3.2 Summary of chemical/enzymatic digestion in human.
Site where
Optimum
Secretion Enzyme reaction Substrates End product
pH
takes place
Salivery Mouth
Salivary amylase 6.5-7.5 Starch (amylose) malthose
secretion cavity
Gastric
Pro(renin) Stomach 2.0 Caseinogen Casein
secretion
Pepsin (ogen) 2.0 Protein Polypeptide
HCl (non
2.0 Pepsinogen Pepsin
enzymatic)
Intestinal Small
Malthase 8.5 Malthose Glucose
secretion intestine
Small Glucose +
Lactase 8.5 Lactose
intestine galactose
Small Glucose +
Sucrase 8.5 Sucrose
intestine fructose
Small
Exopeptidase Aminopeptidase 8.5 Polypeptide and Amino acid
intestine
Small
Dipeptidase 8.5 Dipeptide Amino acid
intestine
5
6. Small
Enterokinase 8.5 Trypsinogen Trypsin
intestine
Bile salt Small
Bile secretion 7.0 Fat Fat droplet
(Non enzymatic) intestine
Pancreatic Small
Amylase 7.0 Starch (Amylose) Malthose
secretion intestine
Small Fatty acid +
Lipase 7.0 Fat
intestine glycerol
Small Protein Amino acid
Trypsin(ogen) 7.0
intestine Chemotrypsinogen chemotrypsin
Small
(Endopeptidase) Chemotrypsin(ogen) 7.0 Casein Amino acid
intestine
Small
(Exopeptidase) Carboxypeptidase 7.0 Polypeptide aminoacid
intestine
Large intestine
In overall digestive gland secrete about 5-6 liters of water daily on the food mixture. From
that amount only 0.2 liter that is not reabsorb by the large intestine. There are symbiotic
bacteria living in the large intestine synthesizing amino acid and vitamins especially vitamin
K from the remaining (residue). The synthesize amino acids and vitamin K is absorb into the
blood stream.
Reabsorption of water and the presence of bacteria turned the “residue” into solid mass
known as fecal matter. It is estimated that about 50% of the solid fecal matter consist of
bacteria. The epithelial mucosal lining of the large intestine secrete mucous to lubricate
fecal matter.
Fecal matter can remain in large intestine for 36 hours before sending it to temporarily to
rectum. It will expelled through anus by anal sphincter muscle.
6
7. Absoption and transport of nutrient
The structure of small intestine is optimized
for nutrient absorption.
Internal small intestine can be increased by the
following methods:
(a) Small intestine is a long slender tube.
(b) The internal surface is folded to increase
surface area.
(c) The folded internal surface has papilae
outgrowth called villus.
(d) Numerous hair like projection on each
villus called microvillus.
Figure 4.4 How the internal surface area of intestine is increased
In each villus is supplied with blood capillaries network and lacteal to absorb and transport
nutrient.
Monosaccharide and amino acid is absorbed through simple diffusion or active to the blood
capillaries. These nutrient is sent to the liver. Most of the monosaccharides (glucose) is
stored in liver or muscle as glycogen and fats. Part of the absorbed glucose is distributed to
the rest of the body and oxidised in cellular respiration for energy generation.
Amino acid is used to synthesis new protoplasm, replacement of dead body tissues,
manufacturing enzymes and hormones. Excess amino acid cannot be stored in liver but
deaminated that is the amino group is removed and turned into urea, uric acid and other
nitrogenous excretory product. These materials is removed through urine and remaining
amino acid is converted into stored glycogen.
7
8. Fatty acid and glycerol enter epithelial cells where it is turned into fat. The fat will enter
lacteal where it is surrounded by protein layer to form lipoprotein and known as
cholymicron. Lipoprotein than enter the blood stream. In the blood, lipoprotein is
hydrolyzes by enzymes to form fatty acids and glycerol. These two lipid componen (fatty
acids and glycerol) will enter cells and used in cellular respiration or stored as fat in liver,
muscles, adipose tissues underneath skin, around heart and kidney and mesentery. The
mesentery is a structure that envelops the internal organs, such as the small intestine,
lending support, blood supply, and lymph vessel drainage. Some of the lipoprotein is used as
cell’s membrane and muclear membrane.
Advantageous of fat as storage material.
Fat is important as reserve energy. It contain significant amount of carbon-hydrogen bond
which is rich in energy compared to carbohydrate. Fat produce 9.3 kcal energy per gram
compared to 3.79 kcal for carbohydrates and 3.12 kcal for protein. Therefore more energy
can be stored in compact package.
The advantageous of fat as storage material
Fat is an important source of reserve energy. Fat contain significant amount of high energy
carbon-hydrogen bond compared to carbohydrates. Fats produce 9.3 kcal of energy /g
compared to 3.79 kcal for carbohydrate and 3.12 kcal for protein. Therefore fat is a compact
high-energy package, which is more suited for animal, which require mobility. Fat also
produced 2 times more water during cellular respiration compared to carbohydrates and
proteins. That is why it is an important for desert.
Variation of digestive tract
Digestive tract of higher organism consist of long elongated tube with one opening at one
end (mouth) for entery of food and another opening at the end (anus) for excretion of
undigested food. This tube is divided into specialized region with specific function as shown
in table 3.2
Variation of the digestive tract in vertebrates is closely associated with the following:
(1) Types of food :
Whether the food is easily absorbed or requires extensive mechanical and enzymatic
digestion.
(2) Quantity of food :
Its depends whether food supply or food source is easily available or otherwise. If food is
difficult to obtain the animal must consume large quantity and digestive tract must be able to
accommodate it until it can be digested later.
3) Body shape :
If the body is long , it is most likely that the digestive tract is long. If the body is compact,
the digestive can be short of in coiled form to provide increase absorption area.
Cyclostoma :
8
9. Cyclostoma is a primitive jawless fish, which has the simplest digestive tract. It is an
elongated tube with esophagus and intestine. The intestine is equipped with spiral valve
known as tiflosol to slows down food movement and increase absorption area. Ikan
Shark :
Digestive system of shark consist of esophagus, stomach and duodenum. Duodenum has
spiral valve to slows down food movement and increase absorption area.
Bird :
The lower end of esophagus enlarge to from crop where food is stored and moistened. The
stomact consist of two parts that is proventriculus and gizzard. Proventriculus secretes
gastric secretion whereas gizzard is a thick wall and muscular which provide mechanical
digestion. For grain eating bird, mechanical digestion is aided with small stone and sand.
Cow. :
A system that could process cellulose before food travelled through the main digestive
organs would be more efficient. The ungulates - cows, deer sheep and their relatives - have
found a way. The lower part of the oesophagus and the stomach of a cow are highly
modified (the quot;four stomachsquot; of a cow). A large chamber, the rumen, is dedicated to
storing grass and mixing it with a variety of symbiotic bacteria. This opens into a second
chamber, the reticulum, with highly folded inner walls that provide a massive area for
bacterial growth. The walls of this chamber are sold in grocery stores as quot;honeycomb tripequot;
The bacteria feed on the cellulose and grow to massive populations. Hours later, the cow
will regurgitate a combination of caked bacteria and undigested food called cud. It will chew
the cud and swallow it, this time diverting it to the third chamber, the omasum. Here water
is withdrawn for recycling. From the omasum the cud enters the true stomach, or
abomasum, where chemical digestion begins.
Because this all occurs before the food enters the stomach, digestive enzymes can now break
down the various proteins, carbohydrates and lipids found in the bacteria. This extremely
rich mixture of nutrients can sustain quite large animals on a diet mainly consisting of
quot;indigestiblequot; grass. In fact, a cow is not living directly on grass, but an a diet of bacteria. It
is little wonder, with this special design for getting the best out of an abundant resource, that
the wildebeest, bison, antelopes and caribou have become the dominant large mammals of
their respective environments.
9