Male Reproductive System — Core Principles
Core Principles
The male reproductive system is responsible for producing sperm and male hormones. Its core components include the testes, which are the primary sex organs located in the scrotum, producing both sperm (spermatogenesis) and testosterone.
Sperm mature and are stored in the epididymis before traveling through the vas deferens. Accessory glands – seminal vesicles, prostate, and bulbourethral glands – contribute fluids to form semen, which nourishes and protects sperm.
The urethra serves as a common exit pathway for semen and urine, passing through the penis, the external copulatory organ. Hormonal regulation by the hypothalamus, pituitary, and testes ensures continuous sperm production and maintenance of male characteristics.
Understanding the pathway of sperm, the role of each gland, and the hormonal feedback loops (GnRH, LH, FSH, testosterone, inhibin) is crucial for NEET aspirants.
Important Differences
vs Female Reproductive System
| Aspect | This Topic | Female Reproductive System |
|---|---|---|
| Primary Sex Organs | Testes (produce sperm and testosterone) | Ovaries (produce ova and estrogen/progesterone) |
| Gamete Production | Spermatogenesis (continuous, millions per day) | Oogenesis (cyclical, one ovum per month typically) |
| Gamete Motility | Sperm are motile (flagellum) | Ova are non-motile (transported by cilia/peristalsis) |
| Hormonal Control | HPG axis (GnRH, LH, FSH, Testosterone, Inhibin) with negative feedback | HPG axis (GnRH, LH, FSH, Estrogen, Progesterone, Inhibin) with both positive and negative feedback |
| External Genitalia | Penis, Scrotum | Vulva (labia, clitoris, vestibule) |
| Duct System Function | Transport and maturation of sperm (epididymis, vas deferens) | Transport of ova, site of fertilization (fallopian tubes), site of fetal development (uterus) |