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Spermatozoa
...  then stimulates spermatogenesis or the formation of spermatozoa or sperm cells in the testes. The epididymis serves as the storage area of the sperm cells. With the help of the sertoli cells in the seminiferous tubules, the sperm cells mature. Upon sexual arousal, the penis becomes tumescent because of engorged blood vessels and ejaculation occurs. Substances in semen The mature spermatozoa are  ...

Testes
...  into 250 to 300 small lobes through these fibrous divisions. In each of these divisions, there are tightly-convoluted tubules that, if laid out flatly, would be about 70 centimetres long. These seminiferous tubules are known as functional elements of the testes. Sperm is created within these tubules and the process is known as spermatogenesis. Sperm is generated at an incredible rate; it is  ...


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