The reproductive cells produced by the male body. Sperm (also known as “spermatozoa”) are ejaculated during orgasm, surrounded by semen, an nutrient-rich fluid. The reproductive role of sperm is to penetrate and fertilize the female egg.

Sperm enter the female reproductive tract through the vagina. To prevent pregnancy, sexually active people can use a number of contraceptives; some of the most common contraceptives include condoms, birth control pills, and spermicidal gels.

Some sexual lubricants can affect the movement of sperm. However, lubricants are not designed to prevent pregnancy and should never be used as contraceptives.