Lab_GIT Flashcards
stimulate acid
secretion
- Acetylcholine * Histamine * Gastrin
inhibits acid secretion
somatostatin
Physical barrier between the lumen and
epithelium
Mucous neck cell (Mucus)
Buffers gastric acid to prevent epithelial
damage
Bicarbonate
Activates pepsin; Kills bacteria
Parietal cell [Gastric acid (HCl)]
Vitamin B12 absorption
Intrinsic factor
Stimulates gastric acid secretion
Enterochromaffin-like cell (ECL)
[Histamine]
Protein digestion
Chief cell (Pepsin)
Stimulates gastric acid secretion
Antral G cells (Gastrin)
Fat digestion
Gastric lipase
Inhibits gastric acid secretion
Antral D cells (Somatostatin)
Tertiary amine belladonna alkaloid
ATROPINE
cholinergic antagonist
ATROPINE
Atropine competes with ________ at the muscarinic
receptors causing blockade of cholinergic
effects → ________ GI motility
Ach ; decrease
T/F: Atropine is reversible
T
Therapeutic use of atropine
Antispasmodic