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Although it is no bigger than a pea, the pituitary gland, located at the base of the brain just beneath the hypothalamus, is considered the most important part of the endocrine system. It's often called the master gland because it makes hormones that control several other endocrine glands.
Given below are the major glands: hypothalamus, pituitary gland, adrenal glands, thyroid, parathyroids, pineal body and reproductive glands (the ovaries and testes) that compose the human endocrine system. Hypothalamus-The hypothalamus is located in the lower central area of the brain. This helps the rest of the endocrine system remain in contact with the nervous system by producing chemicals that will activate or suppress the actions of the pituitary gland to secret hormone.