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Jun 7, 2022 · Your thyroid is a small, butterfly-shaped gland located at the front of your neck under your skin. It’s a part of your endocrine system and controls many of your body’s important functions by producing and releasing (secreting) certain hormones. Your thyroid’s main job is to control the speed of your metabolism (metabolic rate), which is ...
Oct 7, 2022 · Function. The thyroid gland is controlled by the hypothalamus and the pituitary gland, which are both located in the brain. The hypothalamus releases thyrotropin-releasing hormone (TRH), which then tells the pituitary gland to release thyroid-stimulating hormone (TSH).
Feb 15, 2022 · Your body controls your thyroid hormone (T3 and T4) levels through a complex feedback loop. Your hypothalamus releases thyrotropin-releasing hormone (TRH), which triggers your pituitary gland to release thyroid-stimulating hormone (TSH), which stimulates your thyroid to release T3 and T4.
May 28, 2023 · The thyroid is a 2-inch-long, butterfly-shaped gland in the front of your neck that controls your metabolism. It’s part of your endocrine system, which makes chemicals called hormones that...
Jul 29, 2021 · The thyroid gland is a hormone-producing gland located just above the collarbone. It produces T3, T4, and calcitonin, which help with metabolism, calcium production, and bone metabolism.
May 15, 2023 · The thyroid gland's main function is to regulate your metabolism. It produces hormones that help control your heart and digestive system. In infants, thyroid hormones help the brain and bones develop.
Jun 14, 2023 · The thyroid gland is an endocrine organ located in the neck that participates in a myriad of systemic processes. The effects of the hormones it produces can be seen throughout all systems in the body. Thyroid hormones are able to diffuse freely across cell membranes.
Microscopically, the functional unit of the thyroid gland is the spherical thyroid follicle, lined with follicular cells (thyrocytes), and occasional parafollicular cells that surround a lumen containing colloid.
Thyroid hormone is required for normal brain and somatic tissue development in the fetus and neonate, and, in people of all ages, thyroid hormone regulates protein, carbohydrate, and fat metabolism. T4 has minimal hormonal activity, but its long half-life (8 days) serves as a reservoir or prohormone for T3.
The thyroid gland traps iodine and processes it into thyroid hormones. As thyroid hormones are used, some of the iodine contained in the hormones is released, returns to the thyroid gland, and is recycled to produce more thyroid hormones.
