Question 1

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

Accepted Answer

It absorbs water and electrolytes, and propels feces toward the rectum.

Question 2

A patient presents with pain in the lower right abdomen and periumbilical region. Which condition is most likely, and what is the underlying anatomical cause?

Accepted Answer

Appendicitis; inflammation or blockage of the appendix causing irritation of the parietal peritoneum.

Question 3

Which structure marks the division between the upper involuntary and lower voluntary portions of the anal canal?

Accepted Answer

Pectinate line

Question 4

During the defecation reflex, which of the following events occurs as a result of conscious control from the cerebral cortex?

Accepted Answer

Inhibition of voluntary motor neurons, allowing the external anal sphincter to relax

Question 5

Which of the following statements about the liver is CORRECT?

Accepted Answer

The liver performs over 500 functions, including bile production and detoxification.

Question 6

A patient with chronic alcoholism develops cirrhosis. Which of the following best explains the pathophysiology of this condition?

Accepted Answer

Cellular damage and scarring of the liver impair its detoxification and metabolic functions.

Question 7

Which of the following is NOT a component of the portal triad found at the porta hepatis of the liver?

Accepted Answer

Inferior vena cava

Question 8

Which of the following best describes the function of bile in digestion?

Accepted Answer

Bile emulsifies fats, increasing their surface area for enzymatic digestion.

Question 9

A gallstone blocks the cystic duct. Which of the following symptoms is most likely to occur?

Accepted Answer

Intense, spasmodic pain known as biliary colic

Question 10

Which of the following statements about the pancreas is TRUE?

Accepted Answer

The pancreas produces most digestive enzymes and also regulates blood sugar via insulin and glucagon.

Question 11

Which of the following best describes the difference between intraperitoneal and retroperitoneal organs?

Accepted Answer

Intraperitoneal organs are completely covered by visceral peritoneum, while retroperitoneal organs are only partially covered and lie against the posterior body wall.

Question 12

Which of the following is a secondary retroperitoneal organ?

Accepted Answer

Descending colon

Question 13

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

Accepted Answer

It stores fat, contains immune cells, and helps limit the spread of infection within the abdomen.

Question 14

Which of the following is a function of hepatocytes in the liver?

Accepted Answer

Produce bile salts and detoxify poisons such as alcohol

Question 15

A patient has a blockage at the hepatopancreatic ampulla (ampulla of Vater). Which of the following would most likely be impaired?

Accepted Answer

Release of bile and pancreatic enzymes into the duodenum

Question 16

Which of the following best describes the microscopic anatomy of the colon?

Accepted Answer

It has simple columnar epithelium with many goblet cells and lacks villi.

Question 17

Which of the following is a correct pairing of a digestive organ and its embryological gut derivative?

Accepted Answer

Liver – Foregut

Question 18

Which of the following best describes the function of the mesentery?

Accepted Answer

It is a double layer of peritoneum that holds organs in place, stores fat, and provides a route for vessels and nerves.

Question 19

Which of the following is TRUE regarding the anal canal?

Accepted Answer

The external anal sphincter is composed of skeletal muscle and is under voluntary control.

Question 20

A patient has a tumor compressing the portal triad within the lesser omentum. Which of the following structures is LEAST likely to be directly affected?

Accepted Answer

Inferior vena cava

Digestive System II: Anatomy and Physiology of the Abdominal Cavity and Associated Organs

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