sistem reproduksi laki-laki

Perineum 
Struktur Spermatozoa

1.The head of a sperm consists almost entirely of the nucleus, which contains the genetic information (DNA).

2.The tip of the nucleus is covered by the acrosome, a protein-filled vesicle containing several enzymes that play an important role in the process of fertilization.

3.Most of the tail is a flagellum—a group of contractile filaments that produce whiplike movements capable of propelling the sperm at a velocity of 1 to 4 mm per min.

 Fungsi Kelenjar Aksesoris

1.The seminal vesicles secrete alkaline, viscous fluid that helps neutralize acid in the female reproductive tract, provides fructose for ATP production by sperm, contributes to sperm motility and viability, and helps semen coagulate after ejaculation.

2.The prostate secretes a milky, slightly acidic fluid that helps semen coagulate after ejaculation and subsequently breaks down the clot.

3.The bulbourethral (Cowper’s) glands secrete alkaline fluid that neutralizes the acidic environment of the urethra and mucus that lubricates the lining of the urethra and the tip of the penis during sexual intercourse.

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