ATI LPN
Gastrointestinal System NCLEX Questions Questions
Question 1 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 2 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 3 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.
Question 4 of 5
Which of the following statements is correct regarding obstructive sleep apnoea (OSA)?
Correct Answer: B
Rationale: Hypopnoea's definition aligns with B, making it the most correct statement; OSA prevalence is higher (2-4%), and it's more common in men.
Question 5 of 5
Which of the following radiographic changes represents stage 1 of pulmonary sarcoidosis?
Correct Answer: D
Rationale: Stage 1 sarcoidosis is characterized by bilateral hilar lymphadenopathy without parenchymal involvement, making D the correct answer.