explain Main course of thyroid in 200 words...no spamming
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Answer:
The thyroid, or thyroid gland, is an endocrine gland in the neck consisting of two connected lobes. The lower two thirds of the lobes are connected by a thin band of tissue called the thyroid isthmus. The thyroid is located at the front of the neck, below the Adam's apple. 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. The thyroid gland secretes three hormones: the two thyroid hormones – triiodothyronine (T3) and thyroxine (T4) – and a peptide hormone, calcitonin. The thyroid hormones influence the metabolic rate and protein synthesis, and in children, growth and development. Calcitonin plays a role in calcium homeostasis.[1] Secretion of the two thyroid hormones is regulated by thyroid-stimulating hormone (TSH), which is secreted from the anterior pituitary gland. TSH is regulated by thyrotropin-releasing hormone (TRH), which is produced by the hypothalamus.[2]
Answer:
WELL THYROID IS A ENDOCRINE GLAND IN HUMAN BODY SO ENDOCRINE GLAND ARE DUCTLESS MEANS THEY DON'T HAVE DUCT OR TUBE TO SUPPLY HORMONE. HORMONE ARE CHEMICAL ESSENTIAL TO DO PARTICULAR FUNCTIONS THEY DIRECTLY SUPPLY THEM TO BLOOD THEY PRODUCE 2TYPE OF HORMONES CALLED THYROXIN AND CALCITONIN EHIVH HELP TO BALANCE CALCIUM AND ENERGY IN BODY HERE BASICALLY IN THYROXIN IT CONTROLS METABOLISM