Why does administering follicle-stimulating hormone (FSH) to a male with normal testosterone levels not significantly increase muscle mass?

💡 Explanation

FSH primarily acts on Sertoli cells within the testes to support spermatogenesis, rather than directly affecting muscle tissue; because its receptors are mainly in the testes, not muscle. Therefore, FSH administration does not directly stimulate muscle growth; rather than affecting muscle protein synthesis directly or being primarily regulated by androgens in this context.

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