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Like other hormones of the anterior pituitary (adenohypophysis), TSH is stimulated by a releasing hormone produced in the hypothalamus. This releasing hormone, TRH (thyrotropin releasing hormone) travels down the pituitary stalk and stimulates the thyrotrope cells there, via the portal circulation of the pituitary.
What else can I help you with?
Why would TSH have no effect on the metbolic rate of the thyroidectomized rat?
The only effect of TSH (Thyroid Stimulating Hormone) is to stimulate the thyroid gland tissue to produce thyroxine. If there is no longer a thyroid gland to stimulate, the TSH is produced in great abundance, but with no effect.
In Grave's autoimmune disease of the thyroid?
thyroid cells produce class-2 MHC molecules that stimulate autoantibodies that bind to the TSH receptor
How the level of thyroxine in the blood affects the secretion of hormone TSH?
High levels of thyroxine in the blood negatively feedback to the pituitary gland, reducing the secretion of thyroid-stimulating hormone (TSH). Conversely, low levels of thyroxine signal the pituitary gland to increase TSH secretion to stimulate the thyroid gland to produce more thyroxine.
What hormone can result in a goiter?
It is a hormone called T4, or thyroxin. What would normally happen is that Thyroid Stimulating Hormone (TSH) from the anterior pituitary would stimulate the thyroid to release T4. When enough T4 is produced, it inhibits TSH, or thyroid stimulating hormone, from being secreted. However if enough T4 is not released to inhibit TSH (probably due to an iodine deficiency), then TSH keeps on secreting, overstimulating the thyroid and causing the swelling known as goiter.
What is TRH's role in the endocrine system?
Thyrotropin-releasing hormone (TRH) is produced by the hypothalamus and stimulates the release of thyroid-stimulating hormone (TSH) from the pituitary gland. TSH then acts on the thyroid gland to stimulate the production and release of thyroid hormones, which regulate metabolism and energy balance in the body.
Tsh 9.7 what does that mean?
TSH is thyroid stimulating hormone. 9.7 is the concentration of TSH in your blood.
What does TSH level 3.89 mean?
is a 3.89 tsh level high?
What are someTropic hormone?
Some examples of tropic hormones include follicle-stimulating hormone (FSH), luteinizing hormone (LH), adrenocorticotropic hormone (ACTH), and thyroid-stimulating hormone (TSH). These hormones regulate the function of other endocrine glands in the body by stimulating them to produce and release their own hormones.
Is a TSH of 1.08 good?
Yes, a TSH of 1.08 is within the normal range.
As thyroxine levels increase in the blood they exert negative feedback on the release of TSH by the pituitary gland. What effect will this have on the release of TSH?
As thyroxine levels increase the amount of TSH produced will decrease. On the other hand, when TSH levels increase the thyroxine levels will decrease. This is what causes the TSH/thyroxine levels to fluctuate.
Is a TSH value of 5.35 considered hyperthyroidism?
Because TSH is a part of the body's negative feedback system which controls the thyroid's output of thyroid hormones, a DECREASE of TSH would indicate hypERthyroidism. An INCREASE of TSH indicates hypOthyroidism.
Does the over production of tsh cause hypothyroidism?
No. An overproduction of TSH would cause hyperthyroidism.
