ATI RN
Digestive System Practice Questions Questions
Question 1 of 5
Which listed substances are all broken down by the liver?
Correct Answer: D
Rationale: The liver metabolizes various substances including urea, alcohol, and drugs.
Question 2 of 5
An important function of the intestinal villi is to:
Correct Answer: A
Rationale: Intestinal villi are finger-like projections that vastly increase the surface area of the small intestine for nutrient absorption.
Question 3 of 5
What provides the luminal surface of the intestinal wall its characteristics?
Correct Answer: B
Rationale: The luminal surface is smooth and slippery due to mucus secreted by goblet cells in the mucosa, not the peritoneum, which is external.
Question 4 of 5
What happens during the gastric phase of digestion?
Correct Answer: B
Rationale: The gastric phase involves the stomach churning food with gastric secretions (e.g., HCl, pepsin) to form chyme.
Question 5 of 5
About nasopharynx all true except:
Correct Answer: C
Rationale: The nasopharynx is lined by pseudostratified ciliated epithelium and contains the pharyngeal tonsil (adenoids), but the palatine tonsils are located in the oropharynx, not the nasopharynx.