The uterus is an organ of the genital tract of women. It is composed of two parts: the body and neck.
It is within the body of the uterus as the fetus develops after fertilization of an ovum by a spermatozoon
The cervix is the lower part of the body, it connects the body of the uterus with the vagina and the outside. It comes in the form of a thick-walled cylinder whose lumen is virtual in normal times.
* Part of the cervix is exposed to the vagina is called the ectocervix. The doctor can see through the use of a speculum inserted into the vagina and he dismisses the walls.
* The inner lining of the cervix is called the endocervix, it is hardly visible.
The cervix is a crossing point:
* At the time rules, it lets the menstrual blood flowing to the vagina and the outside;
* After intercourse, the cervix left back in seminal fluid containing sperm into the body of the uterus (and then to the fallopian tubes and ovaries may fertilize an egg).
If the semen is contaminated with germs, they can infect the female genitalia, vagina into the Fallopian tubes through the cervix;
* At the end of pregnancy the cervix is changing, and when the moment of childbirth, it disappears completely to let the baby and allow the birth.
