Semen

The fluid released from the penis during ejaculation. It contains sperm and other fluids that help sperm travel.

The liquid that comes out of the penis during ejaculation. It carries sperm.


Semen is the whitish fluid that comes out of the during . It's made up of (reproductive cells produced in the ) mixed with fluids from the gland and seminal vesicles.

Even though semen contains millions of sperm, only a tiny fraction of the fluid is actually sperm cells — the rest is fluid that nourishes and protects them.

Semen can carry sexually transmitted infections () even if the person doesn't have visible symptoms. Using a during sex helps prevent the exchange of semen and reduces the risk of both and STIs.

(pre-ejaculatory fluid) is a separate fluid that can come out of the penis before ejaculation. It can also contain sperm and STIs.

Semen is the whitish fluid that comes out of the during . It's made up of (reproductive cells produced in the ) mixed with fluids from the gland and seminal vesicles.

Even though semen contains millions of sperm, only a tiny fraction of the fluid is actually sperm cells — the rest is fluid that nourishes and protects them.

Semen can carry sexually transmitted infections () even if the person doesn't have visible symptoms. Using a during sex helps prevent the exchange of semen and reduces the risk of both and STIs.

(pre-ejaculatory fluid) is a separate fluid that can come out of the penis before ejaculation. It can also contain sperm and STIs.

Need to talk to someone?

For Teachers

Explore Pregnancy and reproductive health