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Vagina and Vestibule - Anatomy & Physiology (view source)
Revision as of 09:36, 9 September 2008
, 09:36, 9 September 2008→Vagina
== Vagina ==
== Vagina ==
* Fibromuscular canal
* The wall consists of:
** Mucosal layer lined by stratified squamous epithelium
** Layer of smooth muscle
*** Inner circular and outer longitudinal layers
** Outer layer of adventitia
** Not lined by Mesothelium
*** Merges with the adventitial layers of the bladder anteriorly and rectum posteriorly.
* This combination of eleastic fibres and muscular layers allows the massive distension that occurs during parturition.
* After coitus, contraction of the smooth muscle layer ensures that the pool of semen remains within the cervical region.
* When relaxed, the vaginal wall collapses to obliterate the lumen and the vaginal epithelium is thrown into folds.
* The dense lamina propria contains:
** Elastic fibres
** Rich plexus of small veins
** Aglandular
* [[Female Reproductive Tract - Vaginal Smear for Oestrus Detection in the Bitch - Anatomy & Physiology|Vaginal Smear for Oestrus Detection in the Bitch ]]
* [[Female Reproductive Tract - Vaginal Smear for Oestrus Detection in the Bitch - Anatomy & Physiology|Vaginal Smear for Oestrus Detection in the Bitch ]]