Chemicals released into the blood by endocrine glands to help control internal regulatory functions are called:
A)hormones
B)secretions
C)neurotransmitters
D)factors

Question

Quizplus · Accepted Answer

Hormones are chemicals released by endocrine glands into the bloodstream to regulate various body functions. Secretions are a more general term and can refer to any substance released by a cell or gland. Neurotransmitters are chemicals released by nerves to transmit signals to other cells. Factors is a vague term and could refer to any number of substances.

Chemicals Released into the Blood by Endocrine Glands to Help