Reproductive Development

Anatomy and Physiology of the Reproductive System
Male Reproductive System
External Structures:
The external genital organs of the male include:
1. Penis:
? Composed of three cylindrical layers of erectile tissue.
? It serves as outlet for both the urinary and the reproductive tracts.
? The penile artery provides blood supply for the penis.
2. Scrotum:
? it is a rugated, skin-covered muscular pouch.
? It contains the testes, epididymis and the lower portion of the spermatic cord.
? Its function is to support the testes and help regulate the temperature of sperms.
3. Testes:
? They are two ovoid glands encased by protective white fibrous capsule and is composed of a number of lobules.
? Produce spermatozoa and testosterone (male hormone).
5Internal Structure:
The male internal reproductive organs are
1. Epididymis:
? It is a tubule of each testis lead to a tightly coiled tube (20 ft. long).
? Responsible of conducting sperm from the testis to vas deferens.
? Sperms in the epididymis are immobile and incapable of fertilization.
2. Vas Deferens:
? An additional hollow tube surrounded by arteries and veins and protected by a thick fibrous coating.
? Carry sperms from the epididymis through the abdominal cavity to the seminal vesicles.
? Sperms are mature as the pass through vas deferens but still not mobile.