What is the principal action of thyrotropin releasing hormone?
Also question is, what stimulates thyrotropin releasing hormone?
Thyrotropin-releasing hormone (TRH), is a hypophysiotropic hormone, produced by neurons in the hypothalamus, that stimulates the release of thyroid-stimulating hormone (TSH) and prolactin from the anterior pituitary.
Furthermore, what signals the release of TRH? Thyrotropin-releasing hormone (TRH), secreted by the hypothalamus, acts on the pituitary gland to stimulate TSH, which increases the activity of the thyroid gland to generate T4. TSH output is regulated by T4 through negative feedback to the pituitary. Elevated T4 levels then inhibit the release of TSH and TRH.
Similarly, you may ask, why does TRH stimulate prolactin?
Thyrotropin-releasing hormone (TRH) stimulates prolactin release and 45Ca2+ efflux from GH3 cells, a clonal strain of rat pituitary cells. Elevation of extracellular K+ also induces prolactin release and increases 45Ca2+ efflux from these cells.
What kind of cells respond to TRH?
Pituitary cells respond to thyroid hormone by discrete, gene-specific pathways. 1.