ATI RN
Anatomy And Physiology Digestive System Test Questions Questions
Question 1 of 5
Optimum pH for salivary amylase
Correct Answer: C
Rationale: Salivary amylase (ptyalin) works optimally at a pH of around 6.8, close to neutral.
Question 2 of 5
Which of the following is a function of gall bladder?
Correct Answer: B
Rationale: The gall bladder stores bile produced by the liver.
Question 3 of 5
Our food mainly contains-
Correct Answer: A
Rationale: Carbohydrates are the primary component of most diets.
Question 4 of 5
During prolonged fasting-
Correct Answer: B
Rationale: In fasting, carbohydrates (glycogen) are used first, followed by fats, and then proteins.
Question 5 of 5
If for some reason the parietal cells of the gut epithelium become partially nonfunctional, what is likely to happen?
Correct Answer: C
Rationale: Parietal cells secrete HCl; if nonfunctional, the stomach pH rises, reducing pepsin's protein digestion efficiency.