The Endocrine System
6 Biological Bases of Behavior
STEP 4 Review the Knowledge You Need to Score High
Your endocrine system interacts with your nervous system to regulate your behavior and body functions. Your endocrine system consists of glands that secrete chemical messengers called hormones into your blood. The hormones travel to target organs where they bind to specific receptors. Endocrine glands include the pineal gland, hypothalamus, and pituitary gland in your brain; the thyroid and parathyroids in your neck; the adrenal glands atop your kidneys; pancreas near your stomach; and either testes or ovaries.