Semen is a fluid that carries sperm out of the body during ejaculation. The average amount of semen a person releases during ejaculation is about 1-5 milliliters. Semen helps move sperm to an egg for ...

Sperm are male reproductive (sex) cells. The word "sperm" can refer to spermatozoon (singular) or spermatozoa (plural). Sperm are tiny cells with an oval-shaped body and a long tail. They measure just ...