ATI RN
Digestive System Practice Questions Questions
Question 1 of 5
Enzyme maltase in human gut acts on food at a pH of -
Correct Answer: C
Rationale: Maltase works in the small intestine (pH > 7) to convert maltose into glucose.
Question 2 of 5
Which of the following vitamins helps in the maturation of red blood cells?
Correct Answer: C
Rationale: Vitamin B12 is essential for the maturation of red blood cells and DNA synthesis.
Question 3 of 5
Which of the following hydrolytic enzymes act in low pH?
Correct Answer: D
Rationale: Proteases, such as pepsin, function optimally in the low pH environment of the stomach.
Question 4 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 5 of 5
If a patient is experiencing an intensified sympathetic response, listening to the bowel sounds during auscultation would most likely reveal:
Correct Answer: C
Rationale: Sympathetic activation inhibits GI motility (fight-or-flight response), reducing bowel sound rate and intensity.