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The Endocrine System

There are seven glands in the system. These glands don’t have . The pituitary gland is also known as the gland. It hangs at the base of the . If the pituitary produces too little growth hormone, a child may have the condition called . Too much of this hormone might cause a child to grow into a(n) . The parathyroid glands produce a hormone that controls how much is in the blood. The thyroid gland produces hormones that affect how cells use to release energy in food. The thyroid needs the mineral . The sum of all the chemical reactions that occur in the body is called .