TSH is produced when the hypothalamus releases a substance called thyrotropin releasing hormone (TRH) and triggers the pituitary gland to release TSH.
Low levels of thyroid hormones in the blood are detected by the hypothalamus and the pituitary. TRH is released, stimulating the pituitary to release TSH. Increased levels of TSH, in turn, stimulate the thyroid to produce more thyroid hormone, thereby returning the level of thyroid hormone in the blood back to normal. The function of the thyroid gland is to take iodine, found in many foods, and convert it into thyroid hormones: thyroxine (T4) and triiodothyronine (T3). Thyroid cells are the only cells in the body which can absorb iodine. These cells combine iodine and the amino acid tyrosine to make T3 and T4. The hypothalamus and the pituitary gland help control the thyroid gland. The hypothalamus produces thyrotropin-releasing hormone (TRH), which stimulates the pituitary gland to release thyroid-stimulating hormone (TSH). A low level of T3 tells the hypothalamus to release more TRH, and it tells the pituitary to release more TSH. TSH is produced when the hypothalamus releases a substance called thyrotropin releasing hormone (TRH) and triggers the pituitary gland to release TSH. TSH causes the thyroid to make two hormones, triiodothyronine (T3) and thyroxine (T4), to help control body metabolism. Normally, TSH increases the uptake of iodine by the thyroid gland and increases production of thyroid hormone. If there is little iodine available in our diet, insufficient thyroid hormone is produced by the thyroid; hypothalamic TRH causes TSH to be released from the pituitary in large amounts. The thyroid gland is influenced by hormones produced by two other organs: 1  The pituitary gland, located at the base of the brain, produces thyroid stimulating hormone (TSH). 2  The hypothalamus, a small part of the brain above the pituitary, produces thyrotropin releasing hormone (TRH). The thyroid gland is influenced by hormones produced by two other organs: 1  The pituitary gland, located at the base of the brain, produces thyroid stimulating hormone (TSH). 2  The hypothalamus, a small part of the brain above the pituitary, produces thyrotropin releasing hormone (TRH).
http://bolickclinic.com/hypothalamic-pituitary-thyroid-axis/ http://www.endocrineweb.com/conditions/thyroid/how-your-thyroid-works http://www.webmd.com/a-to-z-guides/thyroid-hormone-production http://www.commdiginews.com/health-science/health/fibromyalgia-studies-focus-on-thyroid-pituitary-and-hypothalamus-functions-10236/ http://bolickclinic.com/hypothalamic-pituitary-thyroid-axis/ http://bolickclinic.com/hypothalamic-pituitary-thyroid-axis/ http://www.thyroid.ca/thyroid_gland.php
thyroid produced in hypothalamus