Hormones and Male Reproduction

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7 Questions

Which hormone initiates spermatogenesis?

Follicle-stimulating hormone (FSH)

What is the role of testosterone in males?

All of the above

How is testosterone production regulated?

Negative feedback systems

Which cells produce inhibin?

Sertoli cells

What activates the anterior pituitary to produce LH and FSH?

GnRH

What stimulates Leydig cells?

LH

What is the relationship between testosterone and inhibin?

Inhibin inhibits testosterone production

Study Notes

Hormone Regulation of Spermatogenesis

  • FSH (Follicle-Stimulating Hormone) initiates spermatogenesis.
  • Testosterone plays a crucial role in males by promoting the development of male characteristics and reproductive organs.

Testosterone Production Regulation

  • Testosterone production is regulated by a negative feedback loop involving the hypothalamus, anterior pituitary, and testes.

Inhibin Production

  • Sertoli cells in the seminiferous tubules of the testes produce inhibin.

Anterior Pituitary Stimulation

  • Gonadotropin-Releasing Hormone (GnRH) from the hypothalamus activates the anterior pituitary to produce LH (Luteinizing Hormone) and FSH.

Leydig Cell Stimulation

  • LH stimulates Leydig cells to produce testosterone.

Testosterone and Inhibin Relationship

  • Testosterone inhibits the production of FSH by stimulating the production of inhibin, which in turn inhibits FSH production.

Test your knowledge on the role of hormones in male reproduction and development, including the functions of follicle-stimulating hormone (FSH), luteinizing hormone (LH), and testosterone. Explore how these hormones control spermatogenesis, sex organ growth, bone growth, and the development of male secondary sex characteristics. Learn about the negative feedback systems that regulate hormone levels.

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