ATI RN
Digestive System Mcq Questions Questions
Question 1 of 5
Which of the following inactivates pepsinogen into active pepsin?
Correct Answer: B
Rationale: Hydrochloric acid (HCL) in the stomach activates pepsinogen, converting it into its active form, pepsin.
Question 2 of 5
Which gastric secretion is necessary for the absorption of vitamin B12 in the small intestine?
Correct Answer: C
Rationale: Intrinsic factor, secreted by parietal cells in the stomach, binds to vitamin B12, enabling its absorption in the ileum of the small intestine.
Question 3 of 5
Micelle formation is necessary for the intestinal absorption of
Correct Answer: C
Rationale: Micelles, formed by bile salts, facilitate the absorption of fat-soluble vitamins like vitamin D in the small intestine.
Question 4 of 5
A 40-year-old patient presents with frequent episodes of heartburn, regurgitation, and a sour taste in the mouth after meals. Symptoms are worse when lying down or bending over. Which of the following conditions is the most likely cause of these symptoms?
Correct Answer: B
Rationale: Hiatal hernia allows acid reflux into the esophagus, worsened by lying down or bending, causing heartburn and regurgitation.
Question 5 of 5
If the sphincter at the top of the stomach is not working properly what do we suffer from?
Correct Answer: A
Rationale: A malfunctioning lower esophageal sphincter allows acid reflux, causing heartburn. Constipation, heart attacks, and diarrhea are unrelated to this sphincter.