Question

The endocrine system
a. affects only the reproductive system
b. releases hormones into the bloodstream
c. competes with the nervous system
d. is made up primarily of glands with ducts

I chose d. Is this correct? I want to make sure.

Answer 1

The endocrine system refers to the collection of glands of an organism that secrete hormones directly into the circulatory system to be carried towards distant target organs.

Since the hypothalamus also secretes hormones, I would pick B.

Answer 2

Thank you.