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==Introduction==

 

= Introduction =

The vagina constitutes the part of the female reproductive tract between the cervix and the vulva.  With the vestibule and vulva, it is the copulatory organ and the birth canal.  The '''hymen''' is the poorly developed, vestigial, mucosal folds at the junction of the vagina and vestibule.

The vagina constitutes the part of the female reproductive tract between the cervix and the vulva.  With the vestibule and vulva, it is the copulatory organ and the birth canal.  The '''hymen''' is the poorly developed, vestigial, mucosal folds at the junction of the vagina and vestibule.

=Anatomical Boundaries=

= Anatomical Boundaries =

== Vagina ==

== Vagina ==

* Homologue of the os penis

* Homologue of the os penis

==Histology and Innervation==

== Histology ==

== Vagina ==

== Vagina ==

== Vestibule ==

== Vestibule ==

* Bitch, ewe, mare and some have only minor vestibular glands.

* Bitch, ewe, mare and some have only minor vestibular glands.

** Vestibular glands are small in the bitch, but numerous.  Duct openings are arranged in a linear series.

** Vestibular glands are small in the bitch, but numerous.  Duct openings are arranged in a linear series.