The chemical messages released by the endocrine system into the bloodstream are termed:
A)neurotransmitters.
B)hormones.
C)antigens.
D)endorphins.

Question

Quizplus · Accepted Answer

The chemical messages released by the endocrine system into the bloodstream are called hormones. Neurotransmitters are chemical messengers that are released by nerve cells to transmit signals to other cells. Antigens are molecules that stimulate an immune response. Endorphins are natural painkillers produced by the body.

The Chemical Messages Released by the Endocrine System into the Bloodstream