ATI LPN
Gastrointestinal System NCLEX Questions Questions
Question 1 of 5
Intestinal hormone that stimulates the pancreas to release a watery secretion that is high in bicarbonate ion is
Correct Answer: B
Rationale: Secretin triggers bicarbonate release.
Question 2 of 5
The thought or smell of food initiates the ____ phase of stomach secretion and motility.
Correct Answer: B
Rationale: The cephalic phase is triggered by the thought, sight, or smell of food, stimulating stomach secretion and motility via the vagus nerve.
Question 3 of 5
The physical and chemical breakdown of food is completed primarily in the
Correct Answer: B
Rationale: The small intestine completes digestion with pancreatic enzymes and bile, followed by nutrient absorption.
Question 4 of 5
In the small intestine, serves as an emulsifying agent.
Correct Answer: B
Rationale: Bile, produced by the liver and stored in the gallbladder, emulsifies fats in the small intestine to aid digestion, making B the correct answer.
Question 5 of 5
Which of the following best describes the mechanism of action of heparin?
Correct Answer: C
Rationale: Heparin enhances antithrombin activity, inhibiting thrombin and factor Xa, not cyclo-oxygenase (which is aspirin's mechanism), making C the best answer despite the option being incomplete.