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The function of the male reproductive system is to produce new human beings. The testes transfer sperm to the female body. the sperm is located in the testes also known as testicles.It takes about 78 days for sperm to mature. Sperm can live in the female body for about 48 hours. Sperm goes through the urethera and into the bladder. Then it goes through the penis and out to the female body. Sperm production begins at the age of puvirty and continues throughout life. The scrotum holds the testes in its place. It is also the outer skin of the body. The testes and the penis are located outside of the body because the normal body temperature is to hot for sperm to live. The normal body temperature is 3 or 4 degrees higher than the usual for sperm to live. So it really isn't good to take hot showers because sperm cant live with hot temperature so they die.