Gastrointestinal System — Flashcards

Defecation reflex: 3._____ fibres carry information from the spinal cord to the external anal sphincter (skeletal muscle)

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

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

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

_____ is secreted from S cells in the duodenum

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 I cells in the duodenum and the jejunum

_____ is secreted from K cells in the duodenum and jejunum