A chemical signal that has both endocrine and neural roles is
A)parathyroid hormone.
B)calcitonin.
C)epinephrine.
D)acetylcholine.
E)ecdysteroid.

Question

Quizplus · Accepted Answer

Epinephrine is a chemical signal that can function as both a hormone, released by the adrenal gland into the bloodstream, and a neurotransmitter, released by neurons in the sympathetic nervous system. It is involved in the "fight or flight" response and can affect various organs and systems throughout the body.

A Chemical Signal That Has Both Endocrine and Neural Roles