Sperm are generally produced by the tissues of the testes, and are produced by the fine tubules and other tissues, then stored in the epididymis and then matured. When a large amount of semen is ejaculated out of the body and into the vagina of a woman, it is combined with an egg to form a fertilized egg and then an embryo to produce the next generation, a process generally known as fertilization. In order to conceive, a combination of factors is required, the woman needs to be ovulating and the man’s sperm must be of good quality in order to produce a fertilized egg.