What does cervical midsection mean?

The so-called cervical erosion refers to the outward migration of columnar epithelial cells on the surface of the cervix, replacing the smooth squamous epithelium to form the so-called erosion surface, occupying 1/3-2/3 of the area of the cervix, called cervical erosion. At this stage, the term cervical erosion has been eliminated and replaced by cervical columnar epithelial outward migration to describe this phenomenon. Under normal circumstances, the surface of the cervix is a layer of smooth squamous epithelial cells. After stimulation of sexual life and childbirth, the smooth squamous epithelial cells on the surface of the cervix fall off, and the columnar epithelial cells in the inner layer move outward. Instead, the surface of the cervix forms a red color, similar to erosion. But this is not our true pathological sense of erosion, so the word cervical erosion no longer exists, so it can not talk about the concept of Mi.