MCAT Question A Day - 6/28/14 - Answer!
Sympathetic stimulation results in responses most similar to release of which of the following hormones?
A. Insulin
B. Acetylcholine
C. Epinephrine
D. Aldosterone
C is correct. Epinephrine release leads to "fight or flight" responses, as does sympathetic stimulation. A is out because insulin causes cells to take up glucose. It is not involved in '"fight or flight" responses. B is out because acetylcholine is a neurotransmitter; it has few, if any, known hormonal actions. D is out because aldosterone is · involved in sodium reabsorption by the kidney; it has no role in "fight or flight" responses.
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C is correct. Epinephrine release leads to "fight or flight" responses, as does sympathetic stimulation. A is out because insulin causes cells to take up glucose. It is not involved in '"fight or flight" responses. B is out because acetylcholine is a neurotransmitter; it has few, if any, known hormonal actions. D is out because aldosterone is · involved in sodium reabsorption by the kidney; it has no role in "fight or flight" responses.
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