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Vagina and Vestibule - Anatomy & Physiology (view source)
Revision as of 14:31, 25 November 2022
, 14:31, 25 November 2022no edit summary
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== Introduction ==
= Introduction =
The vagina constitutes the part of the female reproductive tract between the [[Cervix - Anatomy & Physiology|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 - Anatomy & Physiology|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 ===
* Extends from the external ostium of the [[Uterus - Anatomy & Physiology|uterus]] to the entrance of the [[Urethra_- Anatomy & Physiology|urethra]].
* Extends from the external ostium of the [[Uterus - Anatomy & Physiology|uterus]] to the entrance of the [[Urethra_- Anatomy & Physiology|urethra]].
* Mostly retroperitoneal, but the cranial parts are covered by [[Peritoneal_Cavity_- Anatomy & Physiology|peritoneum]].
* Mostly retroperitoneal, but the cranial parts are covered by [[Peritoneal_Cavity_- Anatomy & Physiology|peritoneum]].
=== Vaginal Fornix ===
==== Vaginal Fornix ====
* Protruding [[Cervix - Anatomy & Physiology|cervix]] restricts the lumen of the cranial vagina to a ring-like space known as the fornix.
* Protruding [[Cervix - Anatomy & Physiology|cervix]] restricts the lumen of the cranial vagina to a ring-like space known as the fornix.
* The recess is caudoventral in the cow and ewe.
* The recess is caudoventral in the cow and ewe.
== Vestibule ==
=== Vestibule ===
* Extends from the external urethral opening to the external vulva, so combines urinary and reproductive functions.
* Extends from the external urethral opening to the external vulva, so combines urinary and reproductive functions.
** At [[Oestrus Behaviour - Anatomy & Physiology|oestrus]], the odour of these secretions sexually stimulates the male.
** At [[Oestrus Behaviour - Anatomy & Physiology|oestrus]], the odour of these secretions sexually stimulates the male.
=== Vestibular Bulbs ===
==== Vestibular Bulbs ====
* Present in the mare and bitch
* Present in the mare and bitch
* During the dog's [[Dog Copulatory_Behaviour - Anatomy & Physiology|'tie']], the bulbs are erect and press against the [[Penis - Anatomy & Physiology|penis]], caudal to the enlarged bulb of the glans.
* During the dog's [[Dog Copulatory_Behaviour - Anatomy & Physiology|'tie']], the bulbs are erect and press against the [[Penis - Anatomy & Physiology|penis]], caudal to the enlarged bulb of the glans.
== Vulva ==
=== Vulva ===
* Formed by two labia that meet at dorsal and ventral commissures surrounding the vertical vulvar opening.
* Formed by two labia that meet at dorsal and ventral commissures surrounding the vertical vulvar opening.
** In the mare the dorsal commissure is pointed and the ventral is rounded.
** In the mare the dorsal commissure is pointed and the ventral is rounded.
=== Clitoris ===
==== Clitoris ====
* Partial homologue of the [[Penis - Anatomy & Physiology|penis]].
* Partial homologue of the [[Penis - Anatomy & Physiology|penis]].
* The glans is the only exposed part of the clitoris.
* The glans is the only exposed part of the clitoris.
==== Os Clitoridis ====
===== Os Clitoridis =====
* Found radiographically in some bitches.
* Found radiographically in some bitches.
* Homologue of the [[Penis - Anatomy & Physiology#Glans_Penis_morphology|os penis]]
* Homologue of the [[Penis - Anatomy & Physiology#Glans_Penis_morphology|os penis]]
= Histology =
== Histology ==
== Vagina ==
=== Vagina ===
* Fibromuscular canal
* Fibromuscular canal
=== [[Vaginal Smear for Oestrus Detection in the Bitch ]] ===
==== [[Vaginal Smear for Oestrus Detection in the Bitch ]] ====
== Vestibule ==
=== Vestibule ===
=== Vestibular Glands ===
==== Vestibular Glands ====
* Cow, queen and sometimes the ewe have major vestibular glands ('glands of Bartholin').
* Cow, queen and sometimes the ewe have major vestibular glands ('glands of Bartholin').
** 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.
==Webinars==
<rss max="10" highlight="none">https://www.thewebinarvet.com/urogenital-and-reproduction/webinars/feed</rss>
[[Category:Female Reproduction]]
[[Category:Female Reproduction]]
[[Category:Bullet Points]]