Question 1

Which of the following is NOT considered a primary organ of the digestive system?

Accepted Answer

Teeth

Question 2

What is the main function of the muscular layer in the digestive tract?

Accepted Answer

Propulsion and mixing of food via peristalsis and segmentation

Question 3

During peristalsis, which muscle layers coordinate to propel a bolus through the digestive tract?

Accepted Answer

Longitudinal and circular layers

Question 4

Which of the following best describes the function of the greater omentum?

Accepted Answer

It contains a thick layer of adipose tissue and functions as an energy reserve and insulation

Question 5

A patient presents with difficulty swallowing. Which muscle group is most likely impaired?

Accepted Answer

Pharyngeal constrictors

Question 6

Which of the following structures increases the surface area for absorption in the small intestine?

Accepted Answer

Circular folds (plicae circulares), villi, and microvilli

Question 7

Which layer of the digestive tract contains large blood vessels, lymphatics, and the submucosal neural plexus?

Accepted Answer

Submucosa

Question 8

A patient has a blockage in the common hepatic duct. Which digestive process will be most directly affected?

Accepted Answer

Secretion and transport of bile to the duodenum

Question 9

Which of the following is the correct sequence of layers from the lumen outward in the digestive tract?

Accepted Answer

Mucosa, submucosa, muscular layer, serosa

Question 10

Which of the following equations best represents the relationship between surface area ($$A) $$and absorption rate ($$R) in $$the small intestine, assuming direct proportionality?

Accepted Answer

$$R = kA$$

Question 11

Which of the following is a function of the tongue in the digestive system?

Accepted Answer

Secretion of lingual lipase to begin lipid digestion

Question 12

Which of the following teeth are primarily responsible for tearing and slashing food?

Accepted Answer

Canines (cuspids)

Question 13

A patient with damage to the serosa of the digestive tract would most likely experience problems with which of the following?

Accepted Answer

Lubrication of digestive organs within the peritoneal cavity

Question 14

Which of the following best describes segmentation in the digestive tract?

Accepted Answer

Churning and mixing of contents without directional movement

Question 15

Which of the following is the correct anatomical order for the passage of food from the oral cavity to the stomach?

Accepted Answer

Oral cavity → pharynx → esophagus → stomach

Question 16

Which of the following is a function of the large intestine?

Accepted Answer

Reabsorption of water and compaction of feces

Question 17

Which of the following equations best represents the dehydration (compaction) of organic wastes in the large intestine, where $$W_0 is $$the initial water content and $$W_f is $$the final water content after compaction?

Accepted Answer

$$W_f = W_0$ - C$$

Question 18

Which of the following statements about the mesenteries is correct?

Accepted Answer

They stabilize the position of organs and provide a route for blood vessels, nerves, and lymphatics

Question 19

Which of the following is the correct function of the palatine tonsils?

Accepted Answer

Lymphatic tissue involved in immune defense

Question 20

A patient has a congenital defect resulting in the absence of the lingual frenulum. Which function would be most affected?

Accepted Answer

Anchoring the tongue to the floor of the mouth

Chapter 25: The Digestive System – Anatomy & Physiology Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards