Difficulty: Medium
Average Score: 94%
Simulated
How does ephedrine act on the body?
Correct answer
B
Rationale
The correct answer is B because ephedrine stimulates the release of norepinephrine from nerve endings, leading to increased sympathetic nervous system activity. This results in effects such as increased heart rate and blood pressure. Choices A and C are incorrect because ephedrine does not directly act on alpha or beta-adrenergic receptor sites. Choice D is incorrect because ephedrine primarily stimulates the release of norepinephrine, not dopamine. Choices E, F, and G are not provided, but based on the mechanism of ephedrine action, they would also be incorrect.