A hollow organ that is found inside the lower pelvic area of a female's body. It is connected to both of the fallopian tubes and to the vagina. This is the place where a fetus grows if a woman ge [..]

Touching a person's sex organs for pleasure. This could be a male rubbing his penis or a female rubbing her clitoris because it feels good. People can do it alone or with another person. Masturba [..]

The soft sac of wrinkled skin that covers and protects a man's testicles.

Pregnancy that happens outside the uterus and usually refers to pregnancy occurring in the fallopian tube. An ectopic pregnancy cannot turn into a normal pregnancy. In some cases, if an egg keeps grow [..]

A woman's sex cell, stored in the ovaries. A female is born with all the eggs she will ever have--about 1-2 million. The ovary typically pushes out one every month, about two weeks after a woman [..]

The act of semen coming out of a male's penis during an orgasm. This can happen during sex, masturbation, or even when he is asleep (wet dream). If a male doesn't ejaculate during sexual con [..]

When a fertilized egg grows to be a certain size and sticks itself to the inside of the uterus, it it called an embryo.

When a penis gets stiff and hard. This happens because blood flows into it. This might happen because someone is sexually excited, but it can also happen at other times. A hard penis will get soft aga [..]

Being exposed to a STI means that you were in a situation in which you had a chance to "catch" it. You can be exposed to a STI by having sex with an infected person. It is possible to become [..]

The tubes that eggs move through to go from the ovaries to the uterus. An egg leaves the ovary and rides along the tube until it gets to the uterus.