Gastrointestinal System — Flashcards

_____ is secreted from D cells in the GI mucosa

Gastrin secretion is _____ by high pH of gastric contents

Vagal stimulation is a potent direct activator of parietal cells (H+ secretion) via binding of the neurotransmitter _____ to M3 receptors

Gastrin secretion is _____ by low pH of gastric contents

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

_____-rings represent a physiological contraction of esophageal smooth muscle covered by mucosa.

At least _____% of the pancreas needs to be dysfunctional before malabsorption symptoms manifest.

What type of diarrhoea ceases with fasting?_____

Physiological jaundice usually occurs because of _____ bilirubin

The first urge to defecate occurs when rectal pressure is increased to _____ mm Hg.