Cervix

The cervix is the neck of the uterus. This is the place where the uterus joins with the top end of the vagina. It is normally blocked by a muscuosal plug which helps to prevent infection, and which has to evacuated before the birth process can begin.

In humans it is asscoiated with a particular form of cancer which is detectable by cytological study of epidermal cells remove from the cervix in a process known as the smear test.