Anatomy and Histology of the Cervix

  • Alex Ferenczy


The cervix (term taken from the Latin, meaning “neck”) is the most inferior portion of the uterus protruding into the upper vagina. The vagina is fused circumferentially and obliquely around the distal part of the cervix, dividing it into an upper, supravaginal and lower, vaginal portion.17 The cervix measures in the adult nulligravida 2.5 to 3.0 cm in length, and its normal position is slightly angulated downward and backward. The vaginal portion (portio vaginalis) of the cervix, also referred to as the exocer-vix, is delimited by the anterior and posterior fornices and has a convex elliptical surface. It is centered by the external os, a circular (in the nulligravida) or slitlike (in the parous woman) opening (Fig. 5.1). The portio may be divided into anterior and posterior lips, of which the anterior is shorter and projects lower than its posterior counterpart. The external os is interconnected with the isthmus (internal os) by the cervical canal.


Squamous Epithelium Columnar Epithelium Cervical Canal Cervical Mucus Superficial Cell 
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© Springer Science+Business Media New York 1982

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  • Alex Ferenczy

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