What is Male reproductive system?
{{Infobox anatomy | Name = Male reproductive system | Latin = systema genitale masculinum | Greek = | Image = Human male reproductive system en.svg | Caption = Male reproductive system | Width = 320 | Image2 = Human male reproductive organs.jpg | Width2 = 200 | Caption2 = Male sex organs | Precursor = | System = | Artery = | Vein = | Nerve = | Lymph = }} [[File:Human penis anatomy tamil.jpg|thumb|Labelled male genitalia]] The '''male reproductive system''' is made up of a number of sex organs. It works in the process of [[human reproduction]]. Some organs are outside the body, some are in the [[pelvis]]. The main male sex organs are the [[human penis|penis]] and the [[testicles]], which produce [[sperm]]. During [[sexual intercourse]] the penis delivers the sperm into a woman's [[vagina]]. The sperm can fertilize the [[egg cell]] in the woman's [[womb]]. The fertilized egg may develop into a [[fetus]], which is often later born as a baby. The matched system in women is the [[female reproductive system]]. ==Sex organs== [[File:Sperm release pathway.svg|thumb|Human male reproductive system]] ===Penis=== The [[human penis|penis]] is an organ that is used for [[urination]] and sexual intercourse. The [[urethra]] is a passage that runs underside of the penis. The urine and the semen are released through the urethra. When the male becomes sexually aroused, the penis becomes hard and bigger and ready for sexual intercourse. This [[erection]] occurs because the [[erectile tissue]] of the penis is filled with blood. ===Scrotum=== The [[scrotum]] is a pouch-like structure that hangs behind the penis. It holds and protects the testicles. The function of the scrotum is to keep the testicles less warm than the rest of the body. ===Testicles=== [[Testicles]] are small ball-like organs. An adult testicle size is about 4 to 5 cm long. The testicles produce [[sperm cells]] from teenage years to old age. The sperm cells are produced in the [[s