It receives and processes signals from other brain regions and pathways and translates them into hormones, the chemical messengers of the endocrine system. The hypothalamus connects the nervous system to the endocrine system. The hypothalamus and the pituitary gland are part of the diencephalon region of the brain. Command Centers: The Hypothalamus and the Pituitary Gland Direct the Endocrine System Secondary endocrine organs include the gonads, kidneys, and thymus. Organs such as the pancreas also secrete hormones as part of the endocrine system. ![]() ![]() ![]() Other primary endocrine glands, including the thyroid and parathyroid glands, the adrenal glands, and the pineal gland, adjust the levels of various substances in the blood and regulate metabolism, growth, the sleep cycle, and other processes. The hypothalamus and the pituitary gland are the command and control centers, directing hormones to other glands and throughout the body. The glands of the endocrine system secrete hormones into the bloodstream to maintain homeostasis and regulate metabolism.
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