Explain in details : Male reproductive system

Explanation

The male reproductive system consists of two parts : (1) Part which produce the germ cell and (2) Part that delivers the germ cells to the site of fertilisation.
Testes : 1 pair, located outside the abdominal cavity in scrotum. This is because sperm formation requires `2-3^(@)C` lower temperature than the normal body temperature `(37^(@)C)`.
The formation of germ cells or sperms takes place in the testes.
Testes secrete male sex hormone testosterone.
In boys testosterone regulates the formation of sperms, and brings about secondary sexual changes at the time of puberty.

Vas deferens : The sperms formed are delivered through these ducts unite with a tube coming from the urinary bladder.
Urethra : It is a common passage for the sperms and urine.
Accessory glands : Along the path of the vas deferens, glands like prostate and the seminal vesicles add their secretions. This secretory fluid makes transport of sperms easier and also provides nutrition to the sperms for their motility.