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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. 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.