ATI RN
Digestive System Practice Questions Questions
Question 1 of 5
What is the main role of the hepatic portal system?
Correct Answer: D
Rationale: The hepatic portal system transports nutrient-rich blood from the GI tract to the liver for processing and detoxification before entering systemic circulation.
Question 2 of 5
Which of the following hormones is responsible for stimulating gallbladder contraction and the release of bile into the small intestine during the intestinal phase of digestion?
Correct Answer: A
Rationale: CCK, released in response to fats in the duodenum, stimulates gallbladder contraction and bile release for fat digestion.
Question 3 of 5
Which vitamin is produced by intestinal bacteria?
Correct Answer: A
Rationale: Intestinal bacteria synthesize vitamin B12, which is absorbed in the ileum with intrinsic factor. Vitamins A, C, and D are not produced by gut bacteria.
Question 4 of 5
Ficks law, describes the effects of various factors on the rate of diffusion. Which statement is true?
Correct Answer: B
Rationale: Fick's law states that diffusion rate increases with a larger surface area, steeper concentration gradient, and thinner membrane.
Question 5 of 5
Having reduced amounts of Anti Diuretic hormone does what:
Correct Answer: C
Rationale: Reduced ADH increases urine output, making it dilute (insipid) due to less water reabsorption.