Question 1

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

Accepted Answer

To break down food, absorb nutrients, and eliminate waste

Question 2

Which structure is considered an accessory digestive organ?

Accepted Answer

Pancreas

Question 3

What is the main function of the mesentery in the digestive system?

Accepted Answer

To anchor and support the intestines, providing a pathway for blood vessels and nerves

Question 4

Which of the following organs is secondarily retroperitoneal?

Accepted Answer

Pancreas

Question 5

Which layer of the alimentary canal is responsible for peristalsis and segmentation?

Accepted Answer

Muscularis externa

Question 6

A patient has a deficiency in parietal cell function. Which of the following is most likely to be impaired?

Accepted Answer

Secretion of hydrochloric acid and intrinsic factor

Question 7

Which of the following best explains why the stomach has an additional oblique muscle layer in its muscularis externa?

Accepted Answer

To enhance the mechanical breakdown and churning of food

Question 8

Which cell type in the gastric glands secretes pepsinogen?

Accepted Answer

Chief cells

Question 9

What is the primary function of the villi and microvilli in the small intestine?

Accepted Answer

To increase surface area for nutrient absorption

Question 10

A patient with a blocked major duodenal papilla would have difficulty with which process?

Accepted Answer

Receiving bile and pancreatic enzymes in the duodenum

Question 11

Which of the following is a unique feature of the large intestine compared to the small intestine?

Accepted Answer

Teniae coli and haustra

Question 12

Which of the following best describes the function of the colonocytes in the large intestine?

Accepted Answer

Absorb water and electrolytes

Question 13

Which of the following is the correct order of the large intestine segments, starting from the ileocecal valve?

Accepted Answer

Cecum, ascending colon, transverse colon, descending colon, sigmoid colon, rectum, anal canal

Question 14

Which of the following is a function of the liver related to digestion?

Accepted Answer

Production of bile to emulsify fats

Question 15

A patient has their gallbladder removed. Which of the following is most likely to be affected?

Accepted Answer

Storage and concentration of bile

Question 16

Which of the following best describes the exocrine function of the pancreas?

Accepted Answer

Secretion of enzymes that digest food in the small intestine

Question 17

Which of the following structures is responsible for controlling the entry of chyme from the stomach into the small intestine?

Accepted Answer

Pyloric sphincter

Question 18

Which of the following cell types in the small intestine is primarily responsible for nutrient absorption?

Accepted Answer

Absorptive enterocytes

Question 19

A patient presents with a vitamin B12 deficiency due to lack of intrinsic factor. Which gastric cell type is most likely malfunctioning?

Accepted Answer

Parietal cells

Question 20

Which of the following best explains why the epithelial lining changes from the esophagus to the stomach?

Accepted Answer

To protect against abrasion in the esophagus and against acid in the stomach

The Digestive System: Structure and Function

Study Guide - Practice Questions