The endocrine system

A) directs the most complex mental functions, such as thinking and planning.
B) connects the brain and the spinal cord to the rest of the body.
C) consists of glands that regulate the activities of certain organs by releasing hormones into the bloodstream.
D) communicates through the release of neurotransmitters.

Endocrine System

A network of glands and organs that produce, store, and release hormones into the bloodstream, regulating various bodily functions and processes.

Glands

Organs or tissues in the body that create chemicals that control many bodily functions.

Hormones

Biochemical substances produced by various glands in the body that regulate and control bodily functions and behavior by circulating in the bloodstream.