What Is The Cervical Os
The cervix is about 2 inches in length but can vary in length and width during a woman’s lifetime. This article discusses the anatomy of the cervix and location of the cervical os. It also covers the role of the cervical os in menstruation and pregnancy. Anatomy of the Cervix To describe the cervical os, it helps to first review the anatomy of the cervix. The cervix contains: Ectocervix: The outer part of the cervix that can be seen by the doctor in a pelvic examExternal os: The opening in the center of the ectocervixEndocervix: A passage that connects the vagina to the uterus, also known as the endocervical canalInternal os: The opening into the uterus from the cervixTransformation zone: The border that overlaps the ectocervix and the endocervix...