Testosterone is an example of a chemical signal that affects, variously, the very cells that synthesize it in the testis, the neighboring cells, and distant cells outside the gonads. Thus, testosterone is an example of ________.
A) a neurohormone signal, a neuroendocrine signal, and an exocrine product
B) a paracrine signal, a synaptic signal, and an exocrine product
C) an autocrine signal, a neuroendocrine signal, and a synaptic signal
D) an autocrine signal, a paracrine signal, and an endocrine signal

Question

Quizplus · Accepted Answer

Testosterone acts as an autocrine signal on the cells that produce it, a paracrine signal on neighboring cells, and an endocrine signal when it affects distant cells through the bloodstream.

Testosterone Is an Example of a Chemical Signal That Affects