Hormones and Male Reproduction

Hormones and Spermatogenesis

• Follicle-stimulating hormone (FSH) initiates spermatogenesis, stimulating the Sertoli cells to support sperm development.
• Luteinizing hormone (LH) promotes testosterone production by stimulating Leydig cells in the testes.

Role of Testosterone

• Testosterone regulates the development of male secondary sexual characteristics, such as increased muscle mass, body hair, and deepening of the voice.
• Controls libido and sexual function, playing a crucial role in the maintenance of reproductive tissues.

Inhibin Production

• Sertoli cells produce inhibin, which helps regulate sperm production by inhibiting FSH secretion, creating a feedback mechanism.

Male Reproductive Structures

• Key male structures involved in reproduction include the testes, epididymis, vas deferens, prostate gland, and seminal vesicles.

System of Ducts in Males

• The male duct system consists of the efferent ducts, epididymis, vas deferens, ejaculatory duct, and urethra, all involved in transporting sperm.

Accessory Sex Glands

• Accessory sex glands in males include the seminal vesicles, prostate gland, and bulbourethral (Cowper's) glands, contributing fluids to semen and supporting sperm viability.

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.