Stomach and Intestinal Function Quiz

<p>They inhibit the gastric phase to slow stomach emptying. (D)</p> Signup and view all the answers

<p>Inhibits stomach emptying. (C)</p> Signup and view all the answers

<p>Stretch and pH receptors (D)</p> Signup and view all the answers

<p>It pushes chyme into the duodenum. (C)</p> Signup and view all the answers

<p>It suppresses secretion as the pH drops. (C)</p> Signup and view all the answers

<p>Distension of the stomach (C)</p> Signup and view all the answers

<p>Entry of chyme into the duodenum (D)</p> Signup and view all the answers

<p>Fatty acids and carbohydrates (C)</p> Signup and view all the answers

<p>Inhibits gastric secretion. (D)</p> Signup and view all the answers

<p>Acetylcholine release stops. (A)</p> Signup and view all the answers

Stretching of the stomach wall triggers gastric secretions, ensuring continued secretion of juices while food is present.

The stomach's stretch receptors and pH receptors coordinate the rate of food movement and acid secretion

The presence of chyme in the duodenum slows stomach emptying, preventing a large influx of undigested material into the small intestine

Hormones released by the small intestine that inhibit gastric secretions and stomach emptying, respectively, when chyme enters the duodenum.

Stomach acid secretion is regulated by negative feedback, slowing production as pH drops and/or stomach empties.

The stretching of the stomach walls by food activates sensory receptors, signaling the continued release of gastric juices.

Stretch receptors and pH receptors in the stomach wall monitor food content and acidity, adjusting the rate of muscle contractions and acid production.

The stomach pushes about 10-15 ml of partially digested food (chyme) into the duodenum through peristalsis.

As the stomach empties and the pH drops, negative feedback mechanisms suppress further acid production.

Partially digested proteins buffer stomach acid, increasing pH and triggering the release of acetylcholine by parasympathetic nerves.

Acetylcholine stimulates the release of gastrin from G cells, a hormone that increases gastric juice secretion, tightens the esophageal sphincter and relaxes the pyloric sphincter.

Gastrin release is halted when pH drops below 2 or the stomach becomes less distended, indicating sufficient acid and food breakdown.

When chyme enters the duodenum, the small intestine sends signals back to the stomach to slow down digestion, preventing an overload of undigested food.