Blood Products and Indications for Use
Q: A patient who is chronically anaemic is usually transfused with:
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In males, inhibin is a glycoprotein hormone produced primarily by the Sertoli cells within the seminiferous tubules of the testes. Its primary physiological role is to provide negative feedback on the anterior pituitary gland, specifically to suppress the secretion of Follicle-Stimulating Hormone (FSH). This creates a fine-tuned regulatory loop: when spermatogenesis is active, Sertoli cells produce inhibin, which reduces FSH release, preventing overstimulation. This allows for precise control of sperm production. Inhibin does not significantly affect Luteinizing Hormone (LH) secretion; testosterone provides the main negative feedback for LH. Inhibin, along with testosterone, helps maintain the balance of the hypothalamic-pituitary-gonadal (HPG) axis in males. Measurement of inhibin B is sometimes used clinically as a marker of Sertoli cell function and spermatogenesis.
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