The Endocrine System

The Endocrine System Pituitary Gland Thyroid/Parathyroid Glands Thymus Adrenal Glands Pancreas Gonads (Ovaries) Gonads (Testes)
The endocrine system is made up of various glands. These glands secrete hormones which act as messages throughout the body. These messages help the body function as a whole.

The endocrine glands differ from exocrine glands in that they don't have ducts. Endocrine glands simply secrete their hormones into the blood.

Click on one of the organs which make of the endocrine system to receive more information.