Flashcards in Gastrointestinal Tracts Lab 7 Deck (26)
Name the three functional regions the stomach is divided into
What is the primary function of the stomach
Digestion of macronutrients
Name the principle digestive organs of the ruminant in which digestion is carried out by microorganisms
- large intestine (colon)
- caecum (caecum)
What is the function of the duodenum
Receives partially digested food. Chemical digestion and absorption
What is the function of the jejunum
absorb nutrients from digested food into the bloodstream
What is the function of the ileum
Absorb vitamin B12, bile salts and food that was digested or absorbed in the jejunum
Name the anatomical features (structures) on the internal linings of the omasum
How does bile duct enter the small intestine?
Sphincter of odd
What are the two functional divisions of the pancreas
List the secretions of the pancreas which enter the small intestine to aid digestion
Release digestive enzyme (amylase, trypsin and lipase)
What is the function of the bile
Allow digestion of dietary fat and oils by acting as surfactant that emulsifies them into micelles
What is the name of the serosa surrounding the liver
What is the function of the liver?
Receives and processes blood from nutrients from intestines
Detoxification which converts ammonia to urea
What types of cells are present in the liver?
What are the features of the Kupffer cells
Remove bacteria from portal blood hepatocytes
Maintain blood glucose - removes toxins
What are the functions of the hind-gut in humans?
Absorb water and electrolytes
Ferments plants material
What are the seven features of a cat GI tract
Simple stomach increase protein
Short large and small intestine
Low pH - high HCI (sterilise food and breakdown prey)
What does the porcine midgut consist of?
ilieo caecum valve
What are the features of the porcine midgut?
Small intestine (long for enzymatic digestion)
villi - increase surface
Caecum = breakdown of cellulose
What are the adaptations of the porcine GI tract to its diet?
Large stomach + intestine
What are the adaptations of the equine GI tract to its diet?
Small stomach = cont. eating
No gall bladder = doesn't require bile to be stored
Caecum = fermentation
Semi-colon and caecum = large
What happens to the carbohydrates in the rumen?
Cellulose digested to glucose which is fermented to volatile fatty acid
List the products of carbohydrate digestion
Acetate (ethanoic acid)
Propionate (propanic acid)
B- hydroxy butyrate
What happens to lipids in the rumen
Breakdown of complex lipids via lipolysis
De novo fatty acid synthesis
What is the function of the pyloric sphincter?
Controls the flow of partially digested food from the stomach to the small intestine