15.0k views
3 votes
Why isn't epinephrine considered both a hormone and neurotransmitter?

1 Answer

3 votes

Final answer:

Epinephrine is not both a hormone and neurotransmitter. It acts as a neurotransmitter in postganglionic sympathetic fibers but acts as a hormone when released by the adrenal medulla into the bloodstream.

Step-by-step explanation:

Epinephrine is not considered both a hormone and neurotransmitter because while it acts as a neurotransmitter in the postganglionic sympathetic fibers, it acts as a hormone when released by the adrenal medulla into the bloodstream. Acetylcholine, on the other hand, can be considered a neurotransmitter because it is released by axons at synapses.

User Bruno Matuk
by
7.9k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories