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Hormones and Male Reproduction

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Questions and Answers

Which hormone initiates spermatogenesis?

Follicle-stimulating hormone (FSH) (correct)

Inhibin

Luteinizing hormone (LH)

Testosterone

What is the role of testosterone in males?

Controls the growth, development, functioning, and maintenance of sex organs

Stimulates bone growth and protein anabolism

Promotes sperm maturation and the development of male secondary sex characteristics

All of the above (correct)

How is testosterone production regulated?

Stimulation by GnRH

Inhibition by inhibin

Positive feedback systems

Negative feedback systems (correct)

Which cells produce inhibin?

Sertoli cells Signup and view all the answers

What activates the anterior pituitary to produce LH and FSH?

GnRH Signup and view all the answers

What stimulates Leydig cells?

LH Signup and view all the answers

What is the relationship between testosterone and inhibin?

Inhibin inhibits testosterone production Signup and view all the answers

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.

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Description

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.