Gastric Motility Questions

Gastric emptying is decreased when the gastric wall is distended.

• True

• False

Gastric emptying is decreased when acidity in the duodenum is increased.

• True

• False

Gastric emptying is decreased when hyperosmolar chyme enters the duodenum.

• True

• False

Gastric emptying is decreased when cholecystokinin secretion is increased.

• True

• False

Gastric emptying is decreased when the vagus nerve is stimulated.

• True

• False

A 20-year-old man presented with vomiting due to food poisoning. The MOST important event that aided his vomiting is the contraction of:

• diaphragm.

• abdominal muscles.

• external intercostal muscles.

• lower oesophagal sphincter.

Vomiting centre is located in the medulla.

• True

• False

Vomiting is caused by forward peristalsis of the intestine.

• True

• False

A 25-year-old man was having his dinner after fasting the whole day. Due to hunger, he swallowed the large meal as fast as he could and quickly completed his meal. The MAIN gastric motility involved immediately after the meal is:

• receptive relaxation

• adaptive relaxation

• peristalsis

• gastric emptying

Regarding gastric motility: Which of the following describes the THREE (3) phases of a migrating motor complex of the stomach?

• Phase I: Quiescent period, Phase II: Irregular contractions, Phase III: Regular contractions

• Phase I: Regular contractions, Phase II: Quiescent period, Phase III: Irregular contractions

• Phase I: Irregular contractions, Phase II: Regular contractions, Phase III: Quiescent period

• Phase I: Quiescent period, Phase II: Regular contractions, Phase III: Irregular contractions