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Male sex hormones
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Male sex hormones

Testosterone (TST) is the main male sex or reproductive hormone, which production takes place in the testicles. In particular, TST is secreted by Leydig cells as a response to LH action.

One of the main functions of TST is to stimulate the production of sperm in the Sertoli cells, a process that is regulated by FSH (follicle-stimulating hormone).

Also, Sertoli cells produce another hormone while spermatogenesis is taking place: inhibin. The action of inhibin is to send signals for the brain to stop the production of FSH, thereby creating a positive-negative feedback mechanism.

By MD, FACOG, FACS, FACE (reproductive endocrinologist), BSc, MSc (embryologist) and BA, MA (fertility counselor).
Last Update: 06/07/2018
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