Question 1

Which of the following best describes the function of the pyloric sphincter in the gastrointestinal system?

Accepted Answer

It regulates the passage of chyme from the stomach into the duodenum.

Question 2

A patient presents with yellow discoloration of the skin and sclera. Laboratory tests reveal high levels of unconjugated bilirubin. Which of the following is the most likely cause?

Accepted Answer

The liver is too diseased or immature to conjugate bilirubin

Question 3

Which term refers to the telescoping of one segment of the intestine inside another, leading to obstruction?

Accepted Answer

Intussusception

Question 4

Which enzyme is responsible for breaking down carbohydrates in the oral cavity?

Accepted Answer

Amylase

Question 5

A patient with a history of chronic alcoholism presents with an enlarged, nodular liver and ascites. Which condition is most likely present?

Accepted Answer

Cirrhosis

Question 6

Which of the following laboratory tests is used to detect hidden blood in the feces?

Accepted Answer

Fecal occult blood test

Question 7

Which surgical procedure involves the removal of the gallbladder, often due to gallstones?

Accepted Answer

Cholecystectomy

Question 8

A patient is diagnosed with gastroesophageal reflux disease (GERD). Which anatomical structure is most likely malfunctioning?

Accepted Answer

Lower esophageal sphincter

Question 9

Which of the following best describes the process of emulsification in digestion?

Accepted Answer

Breaking down large fat globules into smaller droplets by bile

Question 10

A patient with Crohn disease is most likely to have which of the following findings on examination of the intestine?

Accepted Answer

Thickened wall with ulcers and skip areas

Question 11

Which of the following drugs is used to treat gastroesophageal reflux disease (GERD) by blocking the production of hydrochloric acid?

Accepted Answer

Proton pump inhibitor drug

Question 12

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

Accepted Answer

Duodenum, jejunum, ileum

Question 13

A patient is found to have a hernia in which the intestine is trapped and its blood supply is cut off, leading to tissue death. What is this type of hernia called?

Accepted Answer

Strangulated hernia

Question 14

Which of the following terms means 'inflammation of the gallbladder'?

Accepted Answer

Cholecystitis

Question 15

Which hormone is released by the duodenum to stimulate the gallbladder to contract and release bile?

Accepted Answer

Cholecystokinin

Question 16

A patient with steatorrhea is most likely deficient in which digestive enzyme?

Accepted Answer

Lipase

Question 17

Which of the following procedures is used to visualize the common bile duct and pancreatic duct using contrast dye injected via an endoscope?

Accepted Answer

Endoscopic retrograde cholangiopancreatography (ERCP)

Question 18

A patient is prescribed a laxative suppository. What is the primary mechanism by which this drug relieves constipation?

Accepted Answer

It directly stimulates peristalsis in the rectum.

Question 19

Which of the following best describes the function of the villi in the small intestine?

Accepted Answer

They increase the surface area for absorption of nutrients and water.

Question 20

A patient with a history of ulcerative colitis is at increased risk for which of the following complications?

Accepted Answer

Polyposis and colon cancer

Medical Terminology: Gastroenterology and the Gastrointestinal System

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