• Save
Digestive System Ppt
Upcoming SlideShare
Loading in...5
×
 

Digestive System Ppt

on

  • 12,816 views

 

Statistics

Views

Total Views
12,816
Views on SlideShare
12,543
Embed Views
273

Actions

Likes
5
Downloads
0
Comments
2

3 Embeds 273

http://gbn-moodle.glenbrook225.org 194
http://moodle.glenbrook225.org 72
http://www.slideshare.net 7

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Digestive System Ppt Digestive System Ppt Presentation Transcript

  • Digestive System
  • Nutrients• Section 48-1 : Review on own• Carbohydrates• Proteins• Fats •Elements found in the compound• Lipids •Function of the compound• Vitamins •Examples of the compound• Minerals •Monomer of the compound• Water
  • Overview of Digestive SystemPlease read but do not take notes on this slide.• The digestive system consists of the alimentary canal as well as the organs and glands that contribute digestive enzymes and other products to specific portions of the canal.• In processing the food you eat, your digestive system uses mechanical and chemical methods.• Three major types of macromolecules must be broken down during digestion—carbohydrates, proteins, and lipids. – When these macromolecules are broken down sufficiently— into individual glucose monomers, amino acids, and fatty acids, respectively—those components (and water) must be absorbed into the body at the small intestine.• Wastes proceed through the large intestine, where the feces form and more water is absorbed.
  • Types of Digestion• Physical Digestion• Chemical Digestion• Both
  • Physical Digestion• Mechanical Digestion• Macromolecule is PHYSICALLY broken down into SMALLER pieces in order to increase SURFACE area to maximize ENZYME action.• Examples: – Chewing – Churning
  • Chemical Digestion• Digestive enzymes are involved by CHEMICALLY breaking the bonds on the macromolecules until MONOMERS are formed.• Examples: – Salivary amylase breaks down starch
  • Route of Digestion• Mouth• Pharynx• Esophagus• Stomach• Small intestine• Large intestine• Anus
  • As food directly passes through thegastrointestinal tractoralimentary canalspecific secretions that aid in digestionare released along the way.
  • Accessory Organs• Aids in digestion• BUT…• Food does NOT pass into these organs.• Instead these organs SECRETE fluids that will enter the alimentary canal through DUCTS.• Examples: – Liver – Pancreas – Gallbladder – Salivary Glands
  • AccessoryOrgans
  • Digestive Secretions• Helps with breaking down of foods• All are hydrolysis reactions• Some are enzymatic reactions• Others are NOT.
  • Salivary amylase• FUNCTIONS – Mouth• MADE – Salivary glands• PURPOSE – Polysaccharide → Disaccharide – Example • Starch → Maltose
  • Pepsin• FUNCTION – Stomach• MADE – Gastric Glands• PURPOSE – Protein → Polypeptides
  • Pancreatic amylase• FUNCTION – Small intestine• MADE – Pancreas• PURPOSE – Polysaccharide → Disaccharide
  • Pancreatic lipase• FUNCTION – Small Intestine• MADE – Pancreas• PURPOSE – Lipids → 3 Fatty Acids + Glycerol
  • Trypsin/Chymotrypsin• FUNCTION – Small intestine• MADE – Pancreas• PURPOSE – Polypeptides → Peptides
  • Intestinal lipase• FUNCTION – Small Intestine• MADE – Intestinal glands• PURPOSE – Lipids → 3 Fatty Acids + Glycerol
  • Intestinal peptidase• FUNCTION – Small Intestine• MADE – Intestinal glands• PURPOSE – Peptides → Amino Acids
  • Maltase/Sucrase/Lactase• FUNCTION – Small Intestine• MADE – Intestinal glands• PURPOSE – Disaccharides → Monosaccharides
  • Additional Secretions for Digestion
  • Saliva• FUNCTION – Mouth• MADE – Salivary Glands• PURPOSE – Begins digestion of food
  • Mucus• FUNCTION • FUNCTION – Mouth – Stomach• MADE • MADE – Salivary glands – Gastric pits• PURPOSE • PURPOSE – Lubricates food – Protects lining from HCl
  • Gastrin• FUNCTION – Stomach• MADE – Gastric pits• PURPOSE – Hormone that stimulates HCl production
  • Gastric fluid/HCl acid• FUNCTION – Stomach• MADE – Gastric pits• PURPOSE – Converts pepsinogen → pepsin – Kills bacteria
  • Secretin• FUNCTION – Small intestine• MADE – Intestinal glands• PURPOSE – Hormone that stimulates the liver and pancreas to secrete fluid
  • Bile• FUNCTION – Small Intestine• MADE – Liver• PURPOSE – Emulsifies fats/lipids
  • Sodium bicarbonate NaHCO3• FUNCTION – Small intestine• MADE – Pancreas• PURPOSE – Neutralizes stomach acid
  • Carbohydrates Organ Before Enzyme After Mouth Starch Salivary amylase Disaccharides Starch Pancreatic amylase Disaccharides Maltose Maltase Smallintestine Sucrase Mono- Sucrose saccharides Lactose Lactase
  • Digestion of Carbohydrates Click on the link above and view the animation associated with Digestion of Carbohydrates
  • Proteins Organ Before Enzyme AfterStomach Protein Pepsin Polypeptides Trypsin Polypeptides Chymotrypsin Peptides Smallintestine Peptides Peptidase Amino acids
  • Digestion of ProteinsClick on the link above and view the animation associated with Digestion of Proteins
  • LipidsOrgan Before Enzyme AfterSmall Emulsified Pancreatic lipase 3 Fatty acids +Intestine Lipids Intestinal lipase Glycerol
  • Digestion of LipidsClick on the link above and view the animation associated with Digestion of Lipids
  • Review the Structures of the Digestive SystemClick on this phrase for Review Information