Author Question: A chemical signal operating in a paracrine manner is one that A) is active at a (Read 591 times)

sammy · **on:** Sep 23, 2013

A chemical signal operating in a paracrine manner is one that
A) is active at a neuronal synapse.
B) affects only the cells that synthesize the paracrine signal.
C) requires transport in the blood before it can act on its target cells.
D) evokes responses from all parts of the vascular system.
E) must move through the air before it reaches its target cells.