Gastrointestinal System — Flashcards

Phase _____ of MMC ends with bursts of regular activity

Slow waves of the GI tract are produced via cyclic opening of _____ channels (depolarization), followed by opening of K+ channels (repolarization)

Cholecystokinin secretion is stimulated by _____ and amino acids

Increased Cl- secretion from CFTR due to cholera toxin results in decreased _____ absorption, thus H2O diffuses into the intestinal lumen

Vagal stimulation increases H+ secretion directly via binding of _____ to M3 receptors on parietal cells

Pepsinogen is secreted in response to _____ and local H+

_____ is secreted from S cells in the duodenum

Acute gastritis may arise with increased _____ due to increased vagal stimulation, which increases H+ production

Fluid secretion in the GI tract occurs when the _____ is stimulated, activating adenylyl cyclase, increasing cAMP production and opening the CFTR channel allowing Cl- ion secretion

Hint: which G-protein

Gastrin secretion is _____ by low pH of gastric contents