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Doctor insights on: Thyrotropin Releasing Hormone

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Gonadotropin-releasing hormone (gnrh) stimulates what?

Gonadotropin-releasing hormone (gnrh) stimulates what?

FSH,LH: Gnrh stimulates follicle stimulating hormone & luteinizing hormone which stimulates the ovary to produce estrogen and Progesterone which stimulates ovulation which causes increased Progesterone which causes secretory endometrium which prepares the endometrium to allow implantation of a fertilized egg. If no fertilized egg, Progesterone falls which stimulates gnrh to again rise & the cycle repeats. ...Read more

Dr. Steven Griggs
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Hormone (Definition)

A hormone (from greek ὁρμή, "impetus") is a chemical released by a cell or a gland in one part of the body that sends out messages that affect cells in other parts of the organism. Only a little amount of hormone is required to alter cell metabolism. In essence, it is a chemical messenger that transports a signal from ...Read more


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How does thyrotropin releasing hormone travel from the hypothalamus to wherever it needs to be?

How does thyrotropin releasing hormone travel from the hypothalamus to wherever it needs to be?

By the blood vessel: Trh is produced in the hypothalamus and travels by blood vessel to the anterior pituitary gland where it stimulates the production of thyroid stimulating hormone. ...Read more

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Gonadotropin-releasing hormone (gnrh) stimulates the production what?

Good question: Gnrh would seem by its name to help release gonadotropin. And if used in a certain fashion it could cause the release of gonadotropins (lh, fsh). However when given in a shot and having a sustained effect on the pituitary, it actually suppresses the release of lh and fsh. And this aspect of the medication can be used to help in many situations. ...Read more

Dr. James Lin Dr. Lin
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What hormone stimulates spermatogenesis?

Dr. James Lin Dr. Lin
1 doctor agreed:
What hormone stimulates spermatogenesis?

Here are some...: It's hard to say which one stimulates which; oftentimes multiple factors are interacting to make a organ properly although one of the involved factors may play a major role for its overall functions. For sperm formation, FSH (follicule-stimulating hormone) is the key one but conjunction with healthy testicular tissue and LH as well as testosterone. More? Ask your Dr., preferably urologist. ...Read more

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What releases anterior pituitary gonadotropins?

What releases anterior pituitary gonadotropins?

Gonadotropes: Fsh and lh are pituitary gonadotropins, they are released in response to pulsatile signals of gnrh from the hypothalamus. The cells that store and release them are sometimes called gonadotropes. ...Read more

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What's luteinizing hormone LH deficiency from--menopause?

What's luteinizing hormone LH deficiency from--menopause?

Not deficient: Lh deficinecy does not go with menopause; in fact lh levels get very much higher during and after menopause. ...Read more

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Is antidiuretic hormone released by the adrenal glands?

Is antidiuretic hormone released by the adrenal glands?

ADH (vasopressin): ADH (vasopressin) is released by the posterior pituitary. ...Read more

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What's LH hormone?

What's LH hormone?

Luteinizing hormone: Lh is a hormone made by the pituitary gland that in women causes the production of estrogen by the ovary (in men causes production of testosterone by the testicle). In women, there is also a mid cycle surge that promotes ovulation (egg release). ...Read more

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Are hormones produced by thyroid gland tropic hormones?

Are hormones produced by thyroid gland tropic hormones?

Hormones: A tropic hormone is a hormone secreted by one gland and then stimulates another gland; for example, the pituitary makes TSH, which targets the thyroid and causes the thyroid to make T4 and T3 (liothyronine). The thyroid hormones (T4, T3 (liothyronine)) target other organs (heart, CNS, GI, etc), but not really other glands, so are not really tropic hormones. ...Read more

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What is thyroid stimulating hormone?

Thyroid regulator : It's the hormone from the pituitary gland that makes the thyroid work harder. ...Read more

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Fsh, lh follicular stimulating hormone (fsh) 4.96 and LH is 2.89 .Is this normal?

Fsh, lh
follicular stimulating hormone
(fsh)
4.96 and LH is 2.89 .Is this normal?

Probably: Normal ranges can vary from lab to lab, so the 1st step would be to compare your results to the reference range, usually listed in parentheses such as (1.5 - 10). For hormone tests, however, results have to be interpreted in the context of what is happening clinically. Expected values for someone who is pregnant, or on birth control pills, or who should be ovulating at the time could all differ. ...Read more

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What Lowers HGH Human Growth Hormone Levels ?

What Lowers HGH Human Growth Hormone Levels ?

Low HGH: The origin of adult low HGH may be congenital or acquired. The most common cause of low HGH (representing two-thirds of cases) are pituitary and parasellar tumors, for 15% of cases, the cause is unknown, and about 20% of cases are from extrapituitary tumors, and 5% from infiltrative or inflammatory lesions. Also, as we age, the levels of HGH decrease. ...Read more

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High follicle-stimulating hormone (fsh) and luteinizing hormone (lh)--what are normal levels at ovulation?

High follicle-stimulating hormone (fsh) and luteinizing hormone (lh)--what are normal levels at ovulation?

Varies: Lh levels peak just before ovulation, usually over 25 iu/l. During the rest of the cycle lh levels should be very low. Fsh levels are slightly high (5-10 iu/l) around cycle day #3 and also peak just before ovulation, around 15iu/l. ...Read more

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What are three hypothalamic hormones that normally stimulate prolactin secretion.?

What are three hypothalamic hormones that normally stimulate prolactin secretion.?

Only one: Prolactin is unique among pituitary hormones in that its secretion is spontaneous in the absence of any stimulation from the hypothalamus. TRH will stimulate some prolactin secretion, but it is not the primary regulator. ...Read more

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What secretes testosterone?

What secretes testosterone?

Specialized glands: Brain signals regulateleydig cells in the testes which secrete testosterone. In males, most of the testosterone is produced in the testes and a small amount is derived from the adrenal gland. In females, small amounts of testosterone are produced in the ovaries and derived from the adrenal gland. ...Read more

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Where is the thyroid-stimulating hormone produced?

Where is the thyroid-stimulating hormone produced?

Pituitary Gland: Tsh (thyroid stimulating hormone) is made in the pituitary gland, which lies just below the brain. The brain and pituitary monitor circulating levels of thyroid hormone. If thyroid levels are low, the pituitary releases higher levels of TSH to get the thyroid gland to make more thyroid hormone. If thyroid levels are high, lower levels of TSH provide less stimulation to the thyroid. ...Read more

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