Question 1

Which of the following best describes the primary function of the digestive system?

Accepted Answer

To break down food into nutrients that can be delivered by the bloodstream to body cells

Question 2

Which structure is NOT considered an accessory organ of the digestive system?

Accepted Answer

Small intestine

Question 3

Which process involves the rhythmic contractions of smooth muscle to move food through the alimentary canal?

Accepted Answer

Peristalsis

Question 4

A patient presents with severe abdominal pain and rebound tenderness. Which condition is most likely?

Accepted Answer

Peritonitis

Question 5

Which layer of the alimentary canal is responsible for secreting mucus to protect underlying tissues?

Accepted Answer

Mucosa

Question 6

Which of the following is TRUE regarding the mesenteries?

Accepted Answer

They support and bind digestive organs together and house blood vessels, nerves, and lymphatics.

Question 7

Which blood vessel delivers nutrient-rich blood from the digestive organs to the liver for processing?

Accepted Answer

Hepatic portal vein

Question 8

Which nervous system division generally stimulates digestive processes?

Accepted Answer

Parasympathetic nervous system

Question 9

A patient has a blockage in the myenteric plexus. Which digestive process is most likely to be affected?

Accepted Answer

Motility of the muscularis externa

Question 10

Which of the following best describes the difference between mechanical and chemical digestion?

Accepted Answer

Mechanical digestion physically breaks food into smaller pieces, while chemical digestion uses enzymes to break chemical bonds.

Question 11

Which of the following is a function of the serosa layer in the alimentary canal?

Accepted Answer

Anchoring digestive organs to surrounding structures

Question 12

Which of the following best explains why the small intestine is considered intraperitoneal?

Accepted Answer

It is located entirely within the peritoneal cavity and is surrounded by visceral peritoneum.

Question 13

Which of the following is a short reflex in the regulation of digestive motility?

Accepted Answer

A reflex pathway confined to local neurons of the enteric nervous system

Question 14

Which of the following is NOT a function of the digestive system?

Accepted Answer

Producing red blood cells

Question 15

Which of the following best describes the role of the submucosal plexus?

Accepted Answer

Regulates secretion from and blood flow to its area of the alimentary canal

Question 16

A patient with a deficiency in goblet cells would most likely experience which of the following?

Accepted Answer

Decreased mucus production and increased risk of damage to the alimentary canal lining

Question 17

Which of the following best explains why defecation is considered a specialized form of propulsion?

Accepted Answer

It involves the movement of indigestible materials out of the body

Question 18

Which of the following is TRUE regarding the regulation of digestive processes by hormones?

Accepted Answer

Hormones can either stimulate or inhibit motility of the alimentary canal

Question 19

Which of the following best describes the arrangement of smooth muscle in the muscularis externa?

Accepted Answer

An inner circular layer and an outer longitudinal layer

Question 20

A patient with trauma resulting in leakage of stomach contents into the peritoneal cavity is at risk for which of the following complications?

Accepted Answer

Peritonitis due to bacterial infection

The Digestive System: Structure, Function, and Regulation 22.1

Study Guide - Practice Questions