The cervix is the lower part of the womb (uterus) and is often called the neck of the womb. It’s possible for your doctor or nurse to see and feel the cervix during an internal (vaginal) examination.
The surface of the outside of the cervix is covered with flat cells called squamous cells. The cervical canal (endocervix) is lined with longer cells called columnar cells or glandular cells, which produce mucus. The area where these cells meet is known as the transformation zone (see below). Cells in this transformation zone can become abnormal. It is these cells, on the surface of the cervix, that are examined in a cervical screening test.