ELI5: Explain Like I'm 5

Erectile tissue

Erectile tissue is a special part of the body that helps boys and men get an erection. Have you ever blown up a balloon and watched how it gets bigger and harder? Well, that's kind of like what happens to the penis.

The penis has three little chambers inside it. These chambers are made up of special tissue that can fill up with blood. When a boy or man gets excited or aroused, blood rushes to the penis and fills up those chambers. This makes the penis get bigger and harder, like a balloon being blown up.

The special tissue inside the penis that fills up with blood is called erectile tissue. It's almost like a sponge that can soak up blood and get bigger and harder. This is what helps boys and men have sex and make babies.

But it's not just boys and men that have erectile tissue. Girls and women have it too, but it's in a different part of the body. Girls and women have erectile tissue in their clitoris and vagina. When they get aroused, the clitoris and vagina fill up with blood and get bigger and more sensitive.

So, remember, erectile tissue helps boys and men get an erection and helps girls and women feel pleasure during sex.