the male reproductive system is made up of several organs which include the testes the accessory glands and penis it is specifically responsible for producing sperm cells and hormonal a sperm cell it is needed tois needed to fertilize an egg cell formanes are responsible for the development of male characteristics american produce numerous sperm cell from average man can have approximately 65 million thousand in a single group of his cement out of this millions of sperm cells only one is needed to fertilize an egg cell a sperm has a head middle part and a tail what is the answer ​