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HANDOUT
Topic # 3045
MONOGASTRIC DIGESTION
Created by: Tracey Hoffman
Source: http://www.ca.uky.edu/agripedia/classes/asc106/gimono.htm
Digestive Tract of the Monogastric Mammal
1. Mouth
- gather and chew feed using tongue and teeth
- salivary glands moisten feed to aid in swallowing
- saliva begins the carbohydrate breakdown with salivary
amylase
2. Esophagus
- tube from mouth to stomach that is open at the mouth end
- separated from stomach by the esophageal sphincter
3.Stomach
- muscular gland lined sac that receives ingesta from the esophagus and
conducts both physical and chemical digestion
- primary secretions: pepsin - enzyme that digests protein; hydrochlorides –
acids that aid in protein digestion
4. Small Intestine
- enzymatic digestion and absorption
- Functions of the small intestine: digestion of proteins, carbohydrates, and fats;
absorption of the end products of digestion
1. duodenum - most digestion occurs here
2. jejunum - some digestion and some absorption occur
3. ileum - mostly absorption
Enzymes in the Small Intestine
Enzyme
Trypsin
Chymotrypsin
Carboxypeptides
Pancreatic Amylase
Lipases
Disaccharides
Dipeptidases
Function
Digest proteins
Source
Secreted from pancreas
Digests carbohydrates
Digests lipids
Digests carbohydrates
Digests peptides
Secreted from pancreas
Bile
made in liver
stored in gall bladder
active in the small intestine
emulsifies fat to aid in digestion
5. Cecum - essentially non functioning in monogastrics
6. Large Intestine
- bacterial activity
- water absorption
- waste storage
Secreted from small
intestine