Giant Microbes Original Thyroid
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The thyroid is a large endocrine gland located in the front of your neck. It has two halves that wrap around the windpipe. The endocrine system uses hormones to control body functions. Unlike nerve signals which respond within seconds, hormones have long-lasting effects and can act over hours or months. Hormones, such as those produced by the thyroid gland, travel in your blood to reach every body part
The thyroid functions to control your body’s rate of metabolism, including maintenance of body weight, the rate of energy use and your heart rate. It does this by producing and releasing hormones. Unlike other endocrine glands, the thyroid can also store the hormones it produces. The thyroid is also unique in that its cells are the only cells in the body that can absorb iodine, found in many foods. The thyroid combines iodine with amino acids to produce the hormones thyroxine and triiodothyronine. Every cell in the body depends upon these hormones for regulation of their metabolism.
The thyroid gland is under the control of the pituitary gland, a peanut-sized gland at the base of the brain. When the level of thyroid hormones drop too low, the pituitary gland produces thyroid stimulating hormone (TSH) which directs the thyroid to produce and secrete more hormones. The thyroid acts like a furnace with the hormones representing heat and the pituitary gland as the thermostat. When the heat gets back to the thermostat, it turns the thermostat off. As the room cools (hormone levels drop), the thermostat turns back on (TSH increases) and the furnace produces more heat (hormones). The pituitary gland itself is regulated by a region of the brain called the hypothalamus. You can imagine the hypothalamus as the person who regulates the thermostat since it tells the pituitary gland at what level the thyroid should be set.