Question 1

Which layer of the alimentary canal is primarily responsible for peristalsis, the involuntary movement that pushes food through the digestive tract?

Accepted Answer

Muscularis

Question 2

A patient presents with yellowing of the skin and eyes. Laboratory tests reveal elevated bilirubin levels. Which organ is most likely failing to process bilirubin efficiently, and what is the condition called?

Accepted Answer

Liver; jaundice

Question 3

Which of the following best describes the function of the cardiac sphincter?

Accepted Answer

Prevents backflow of stomach acid into the esophagus

Question 4

A patient with celiac disease has damage to which structure, leading to malabsorption?

Accepted Answer

Intestinal villi

Question 5

Which digestive enzyme is secreted by the pancreas to break down proteins?

Accepted Answer

Proteases

Question 6

A patient is diagnosed with gallstones (cholelithiasis). Which duct is most likely to be obstructed, causing pain after eating fatty foods?

Accepted Answer

Common bile duct

Question 7

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

Accepted Answer

Water reabsorption

Question 8

A patient with persistent heartburn is diagnosed with GERD. Which anatomical structure is most likely malfunctioning?

Accepted Answer

Lower esophageal sphincter (LES)

Question 9

Which hormone, secreted by the stomach, stimulates the secretion of gastric acid?

Accepted Answer

Gastrin

Question 10

A newborn is treated with bili lights for jaundice. What is the physiological effect of this treatment?

Accepted Answer

It breaks down bilirubin in the skin

Question 11

Which of the following best explains why the small intestine has villi and microvilli?

Accepted Answer

To increase surface area for absorption

Question 12

A patient with chronic pancreatitis is at risk for which of the following complications?

Accepted Answer

Impaired digestion of fats and proteins

Question 13

Which of the following is a correct formula for calculating Body Mass Index (BMI)?

Accepted Answer

$$ BMI = \frac{weight\ (kg)}{height\ (m)^2$} $$

Question 14

Which of the following is NOT a function of the liver?

Accepted Answer

Stores bile in the gallbladder

Question 15

A patient with Crohn's disease is most likely to experience which of the following symptoms?

Accepted Answer

Persistent watery diarrhea and immune dysfunction

Question 16

Which of the following best describes the role of the appendix according to current research?

Accepted Answer

It acts as a storehouse for beneficial bacteria

Question 17

A patient is unable to digest lactose due to a deficiency in which enzyme?

Accepted Answer

Lactase

Question 18

Which of the following is the correct sequence of regions in the small intestine from proximal to distal?

Accepted Answer

Duodenum, jejunum, ileum

Question 19

A patient with hepatitis B is most likely to have contracted the virus through which route?

Accepted Answer

Contact with infected blood or body fluids

Question 20

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

Accepted Answer

It stores fat and lays like a drape over the intestines

Chapter 23: The Digestive System Notes

Study Guide - Practice Questions

Study Guide - Flashcards