The human male reproductive system is composed of a pair of testes, genital ducts, several accessory glands and penis, Testis is the primary male reproductive organ. it lies in small sac-like muscular structure outside the abdominal cavity called scrotum.
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- In male adults, each testis is a small, pinkish and oval. But composite structure about 5 cm in length, 2.5 cm width and 3 cm in thickness.
- It produces spermatozoa and secrets the male sex hormone testosterone.
- Maturation of sperms needs temperature less than the body.
- Sperms achieve maturity and motility in epididymis.
- Seminal Vesicles is situated behind the bladder.
- About 70% of the semen in seminal fluid produced by seminal vesicles.
- Prostate Gland is situated around the first part of the urethra.
- Enlargement of prostate results in prostatitis i.e. urination is difficult or impossible.
- Urethra is a thick walled muscular duct and is a common passage for both urine and semen.
- Urethra traverse and open at the tip of the penis.
- Penis is a vascular, spongy and erectile structure.
- Penis contains three longitudinal columns of spongy erectile tissue which becomes filled with blood during sexual excitement.