-
Define Metabolism.
a group of chemical processes that builds or breaks down body tissues after absorption
-
What are the three processes involved in metabolism?
- catabolism
- anabolism
- waste removal
-
What is catabolism?
the breakdown of complex materials into simpler materials
-
What is anabolism?
the synthesis of complex materials from simple compounds
-
Why is the liver important in metabolism?
It's the central hub of metabolism as there is a portal vein from the cecum to the liver.
-
Gastrin:
- pyloric antrum of stomach or abomasum
- stimulates through stomach distension
- stimulates acid secretion by gastric glands
-
Describe secretin.
- occurs in 1st cells in small intestine
- stimulated by acidification of duodenum and peptones in duodenum
- stimulation of volume and bicarbonate outputs of pancreatic secretion and of bile
- (prevents enzymes from being destroyed)
-
CCK (Cholecystokinin)
- starts in small intestine
- stimulated by long-chain fatty acids, amino acids, peptones
- Functions: contraction of gall bladder and pancreas, stimulates synthesis of pancreatic enzymes (fat digestion), inhibits HCl secretion, enances insulin release, may induce satiety (animal feeling full)
|
|
