Regulation of Gastrointestinal Function: Interactive Learning Quizzes

Question 1

Which of the following hormones is NOT involved in the regulation of gastric acid secretion?

Accepted Answer

Secretin

Answer

Gastrin

Answer

Histamine

Answer

Somatostatin

Question 2

Which function is NOT carried out by the enteric nervous system in regulating gastrointestinal function?

Accepted Answer

Controlling blood flow to the gut

Answer

Regulating digestive secretions

Answer

Coordinating peristalsis and segmentation

Answer

Mediating local reflexes

Question 3

Which neurotransmitter is crucial for initiating and propagating intestinal migrating motor complexes (IMCs) in the myenteric plexus?

Accepted Answer

Acetylcholine

Answer

Epinephrine

Answer

Gastrin

Answer

Serotonin

Question 4

What is the main cause of ulcerative colitis?

Accepted Answer

Immune system attacking the colon lining

Answer

Excess stomach acid production

Answer

Helicobacter pylori infection

Question 5

Which hormone inhibits gastric emptying and stimulates pancreatic secretion?

Accepted Answer

Cholecystokinin (CCK)

Answer

Gastrin

Answer

Secretin

Answer

Gastric inhibitory peptide (GIP)

Question 6

Which hormone predominantly stimulates gastric acid secretion?

Accepted Answer

Gastrin

Answer

Secretin

Answer

Cholecystokinin

Answer

Gastric inhibitory peptide

Question 7

What is the primary function of the myenteric plexus in the gastrointestinal tract?

Accepted Answer

Controlling the rate and force of gastrointestinal contractions

Answer

Regulating blood flow to the gastrointestinal tract

Answer

Secreting hormones that regulate gastrointestinal function

Answer

Sensing changes in luminal pH

Question 8

Which of the following is NOT a function of the liver in gastrointestinal regulation?

Accepted Answer

Secretion of gastric acid

Answer

Production of bile

Answer

Metabolism of nutrients

Answer

Storage of glucose

Question 9

Which nerve primarily mediates parasympathetic stimulation of the gastrointestinal tract?

Accepted Answer

Vagus nerve

Answer

Sympathetic nerve

Answer

Sensory nerve

Answer

Motor nerve

Question 10

Which neurotransmitter is released by postganglionic parasympathetic neurons in the gastrointestinal tract?

Accepted Answer

Acetylcholine

Answer

Noradrenaline

Answer

Dopamine

Answer

Serotonin

Question 11

Define the receptive relaxation of the stomach.

Accepted Answer

Relaxation of the stomach to accommodate increased food volume

Answer

Contraction of the stomach to propel food into the small intestine

Answer

Inhibition of gastric emptying in response to acid in the duodenum

Answer

Stimulation of gastric acid secretion in response to protein in the stomach

Question 12

Which hormone plays a key role in the regulation of bile flow and gallbladder contraction?

Accepted Answer

Cholecystokinin

Answer

Gastrin

Answer

Secretin

Answer

Gastric inhibitory peptide

Question 13

Which hormone primarily stimulates gastric acid and pepsinogen secretion?

Accepted Answer

Gastrin

Answer

Secretin

Answer

Cholecystokinin

Answer

Enterogastrone

Question 14

The myenteric plexus is primarily responsible for:

Accepted Answer

Contracting and relaxing the gastrointestinal tract walls

Answer

Secreting digestive enzymes

Answer

Regulating blood flow to the gastrointestinal tract

Answer

Absorbing nutrients

Question 15

Which of the following is NOT a common disorder affecting the digestive system?

Accepted Answer

Myocardial infarction

Answer

Gastroesophageal reflux disease

Answer

Irritable bowel syndrome

Answer

Hepatitis

Question 16

Which of the following factors does NOT significantly affect gastric emptying?

Accepted Answer

Body posture

Answer

Gastric volume

Answer

Osmolality of gastric contents

Answer

Acidity of gastric contents

Question 17

The enterogastric reflex involves:

Accepted Answer

Inhibition of gastric motility and secretion in response to distension of the small intestine

Answer

Stimulation of gastric motility and secretion in response to distension of the small intestine

Answer

Inhibition of gastric motility and secretion in response to distension of the stomach

Answer

Stimulation of gastric motility and secretion in response to distension of the stomach

Question 18

Which hormone primarily inhibits gastric acid secretion?

Accepted Answer

Somatostatin

Answer

Gastrin

Answer

Secretin

Answer

Cholecystokinin

Question 19

The ileocecal valve is located between:

Accepted Answer

Small intestine and large intestine

Answer

Large intestine and rectum

Answer

Esophagus and stomach

Answer

Stomach and small intestine

Question 20

Which hormone is responsible for stimulating the secretion of gastric acid?

Accepted Answer

Gastrin

Answer

Glucagon

Answer

Secretin

Answer

Cholecystokinin

Question 21

What triggers the gastrocolic reflex?

Accepted Answer

Filling of the stomach

Answer

Emptying of the stomach

Answer

Acidification of the duodenum

Answer

Distension of the colon

Question 22

Which hormone is responsible for stimulating the contraction of the gallbladder?

Accepted Answer

Cholecystokinin

Answer

Gastrin

Answer

Glucagon

Answer

Secretin

Question 23

Which cells in the stomach are responsible for secreting hydrochloric acid?

Accepted Answer

Parietal cells

Answer

Enterochromaffin-like cells

Answer

G cells

Answer

Chief cells

Question 24

Identify the predominant neurotransmitter released by the postganglionic parasympathetic neurons of the enteric nervous system.

Accepted Answer

Acetylcholine

Answer

Dopamine

Answer

GABA

Answer

Noradrenaline