Endo- = within
-crine = to secrete (emit or release)
The endocrine system is delicately balanced and crucial. It works with the nervous system to send messages, in the form of hormones,to our cells and organs. In that way it controls almost every bodily function.
Glands produce hormones. The main glands of the endocrine system are the hypothalamus, pituitary, thyroid, adrenal, pancreas,reproductive (ovaries and testes) and pineal glands.
The hypothalamus is the main controller. It receives information from all parts of the body and then issues instructions to different glands, depending on what the body needs.
The body is always trying to maintain a balance (homeostasis) so messages from the hypothalamus are to either start or stop producing a hormone until the proper level is reached.