Flashcards in Digestion and Excretion Deck (22):
7 parts of digestive tract
Mouth, esophagus, stomach, small intestine, large intestine, rectum, anus
3 parts of small intestine
Duodenum, ileum, jejunum
4 parts of large intestine
Ascending colon, transverse colon, descending colon, sigmoid colon
4 types of stomach cells
Mucous, chief, parietal, G
Function of mucous cells
Secrete mucous to lubricate stomach wall
Function of chief cells
Function of parietal cells
Function of G cells
What does pepsinogen do?
Precursor to pepsin, which digests protein
What does HCl do?
Diffuses to lumen to lower pH of stomach and raise pH of blood
What does gastrin do?
Absorbed into blood and stimulates parietal cells to secrete HCl
6 pancreatic enzymes
Trypsin, chymotrypsin, pancreatic amylase, lipase, ribonuclease, deoxyribonuclease
What does trypsin and chymotrypsin do?
Degrade proteins into small polypeptides
What does pancreatic amylase do?
Hydrolyzes polysaccharides to disaccharides and trisaccharides
What does lipase do?
Degrades fat, specifically triglycerides
Where is bile produced and stored?
Liver, stored in gall bladder
Function of renal corpuscle
Function of proximal tubule
Reabsorption and secretion
Function of loop of Henle
Concentrates solute in medulla
Function of distal tubule
Empties into collecting duct
Function of collecting duct