ATI RN
Digestive System Mcq Questions Questions
Question 1 of 5
Ptyalin is secreted by and work in medium.
Correct Answer: B
Rationale: Ptyalin (salivary amylase) is secreted by salivary glands and works in a slightly acidic to neutral pH.
Question 2 of 5
Which enzyme works in highly acidic pH
Correct Answer: A
Rationale: Pepsin functions optimally in the highly acidic pH of the stomach (around 1.8-2).
Question 3 of 5
What is the site of amino acids absorption in human's small intestine?
Correct Answer: D
Rationale: Amino acids are absorbed mainly in the jejunum and ileum of the small intestine.
Question 4 of 5
Succus entericus is secreted by-
Correct Answer: C
Rationale: Succus entericus is secreted by Crypts of Lieberkuhn and Brunner's glands.
Question 5 of 5
A carbohydrate splitting enzyme is secreted by -
Correct Answer: D
Rationale: Crypts of Lieberkuhn secrete enzymes like maltase that split carbohydrates.