The endocrine system involves communication by chemical messengers called _____, which circulate through the _____.

Question

Quizplus · Accepted Answer

The endocrine system involves communication by hormones that circulate through the bloodstream. Option B is incorrect because neurotransmitters are involved in communication within the nervous system, not the endocrine system. Option C is also incorrect because cerebrospinal fluid is not involved in communication in the endocrine system. Option D is incorrect because endorphins are a type of hormone, but they are not the only type involved in the endocrine system, and they do not circulate through the nervous system.

The Endocrine System Involves Communication by Chemical Messengers Called _____