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ectocervix

(EK-toh-SER-vix)
The outer part of the cervix that opens into the vagina. The ectocervix is lined with squamous cells (thin, flat-looking cells under a microscope). During a pelvic exam, cells may be scraped from the ectocervix so they can be checked under a microscope for infection, inflammation, cervical cancer, or changes that may become cervical cancer. Most cervical cancers begin in squamous cells. Also called exocervix.
Anatomy of the female reproductive system; drawing shows the uterus, myometrium (muscular outer layer of the uterus), endometrium (inner lining of the uterus), ovaries, fallopian tubes, cervix, and vagina.Enlarge this image in new window
Anatomy of the female reproductive system. The organs in the female reproductive system include the uterus, ovaries, fallopian tubes, cervix, and vagina. The uterus has a muscular outer layer called the myometrium and an inner lining called the endometrium.
Drawing of the anatomy of the cervix showing the internal OS, endocervical canal, endocervix, ectocervix, and external OS. The uterus and vagina are also shown. There is also a pullout that shows a close up of the squamocolumnar junction (the area where the endocervix and ectocervix meet) and the cells that line the endocervix and ectocervix.Enlarge this image in new window
Anatomy of the cervix. The cervix is the lower, narrow end of the uterus that connects the uterus to the vagina. It is made up of the internal OS (the opening between the cervix and the upper part of the uterus), the endocervix (the inner part of the cervix that forms the endocervical canal), the ectocervix (the outer part of the cervix that opens into the vagina) and the external OS (the opening between the cervix and vagina). The area where the endocervix and ectocervix meet is called the squamocolumnar junction, which contains both glandular cells (column-shaped cells that make mucus) from the endocervix and squamous cells (thin, flat cells) from the ectocervix. The squamocolumnar junction is sometimes referred to as the transformation zone.
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