Duodenal distension Presence of irritation in the duodenal mucosa Acidity of the duodenal chyme Osmolarity Presence of certain degradation products in the chyme are factors that:

GASTROINTESTINAL PHYSIOLOGY

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	They promote gastric emptying
B	They inhibit gastric emptying
C	Either A or B
D	None of the above

Explanation:

Detailed explanation-1: -Secretin is released by acid in the duodenum and stimulates pancreatic fluid and bicarbonate secretion, leading to neutralization of acidic chyme in the intestine (seeChapter 56). Secretin also inhibits gastric acid secretion (seeChapter 51) and intestinal motility.

Detailed explanation-2: -The rise in osmolality of the hypotonic beverage from the stomach to the duodenum is attributable to maltodextrin digestion, Na+ secretion, and greater water than solute absorption.

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