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The TSH, in turn, stimulates the thyroid to produce thyroid hormone until levels in the blood return to normal. Thyroid hormone exerts negative feedback control over the hypothalamus as well as anterior pituitary, thus controlling the release of both TRH from hypothalamus and TSH from anterior pituitary gland. [2] The HPA, HPG, and HPT axes are ...
They can be classified as a hypothalamic–pituitary axis (HP axis) of which the adrenal (HPA Tooltip hypothalamic–pituitary–adrenal axis), gonadal (HPG Tooltip hypothalamic–pituitary–gonadal axis), thyroid (HPT Tooltip hypothalamic–pituitary–thyroid axis), somatotropic (HPS Tooltip hypothalamic–pituitary–somatotropic axis), and ...
The hypophyseal portal system also plays an important role in several diseases involving the pituitary and central nervous system. In several cases of hypophyseal and pituitary metastatic tumors, the portal system acts as the pathway for metastasis from the hypothalamus to the pituitary. That is, cancerous cells from the hypothalamus multiply ...
Pages in category "Hormones of the hypothalamus-pituitary-thyroid axis" The following 8 pages are in this category, out of 8 total. This list may not reflect recent changes .
HPG regulation in males, with the inhibin/activin system playing a similar role on GnRH-producing cells. The hypothalamus is located in the brain and secretes GnRH. [1] GnRH travels down the anterior portion of the pituitary via the hypophyseal portal system and binds to receptors on the secretory cells of the adenohypophysis. [2]
LH is released from the pituitary gland along with FSH in response to GnRH release into the hypophyseal portal system. [4] Pulsatile GnRH release causes pulsatile LH and FSH release to occur, which modulates and maintains appropriate levels of bioavailable gonadal hormone—testosterone in males and estradiol in females—subject to the requirements of a superior feedback loop. [3]
Hormones of the hypothalamus-pituitary-thyroid axis (8 P) Hormones of the pituitary gland (2 C, 1 P) Hormones of the somatotropic axis (11 P)
[8] [12] The hypothalamic-pituitary-thyroid axis is also altered in FHA; TSH levels are low-to-normal and there is an increase in reverse triiodothyronine and low level of triiodothyronine. [3] Relative energy expenditure (REE) is also closely linked to T 3, as is evidenced by a correlation between macronutrient intake, REE, and thyroid hormone ...