ATI LPN
NCLEX Questions on Gastrointestinal System Questions
Question 1 of 5
The middle portion of the small intestine is the
Correct Answer: B
Rationale: The jejunum is the middle section.
Question 2 of 5
Most of the nutrient absorption along the alimentary canal occurs in the
Correct Answer: C
Rationale: The jejunum is the primary site for nutrient absorption due to its large surface area from villi and microvilli.
Question 3 of 5
The finger-like projections of the small intestine that give the mucosa a velvety appearance and greatly increase the surface area are called
Correct Answer: D
Rationale: Villi are finger-like projections in the small intestine that increase surface area for nutrient absorption.
Question 4 of 5
The pancreas is stimulated to release its secretions by
Correct Answer: D
Rationale: Secretin, released from the duodenum, stimulates the pancreas to secrete bicarbonate and enzymes to neutralize acidic chyme.
Question 5 of 5
The primary function of the stomach is:
Correct Answer: B
Rationale: The stomach stores food, mechanically churns it, and begins protein digestion with enzymes like pepsin, making B the correct answer.