GI Flashcards
(7 cards)
0
Q
Function of intrinsic factor
A
Forms complex with cobalamin (vitamin B12)
1
Q
4 functions of HCl
A
1) denature protein
2) activate pepsinogen
3) solubilize calcium salts
4) kills bacteria
2
Q
Where is IF-VitB12 absorbed?
A
Terminal ileum
3
Q
3 cells that release PGs
A
Surface mucous cells
Parietal cells
Chief cells
4
Q
Gastric lipase and pepsinogen in chief cells are in what compartment?
A
Zymogen granules
5
Q
Gastric lipase eventually causes release of CCK. What 3 organs does CCK then affect?
A
Stomach
Pancreas
Gallbladder
6
Q
What stimulators of chief cell secretion use Ca2+ as a second messenger?
A
ACh
Gastrin
CCK
