Vagina M Recti
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Vagina M Recti
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[caption id="attachment_6527" align="aligncenter" width="379"] Fig 1 - Overview of the female reproductive tract.[/caption]
[caption id="attachment_6625" align="aligncenter" width="566"] Fig 2 - Sagittal section of the female pelvis, showing the anatomical relations of the vagina.[/caption]
[caption id="attachment_47760" align="aligncenter" width="512"] Fig 3 - The anterior and posterior vaginal fornices[/caption]
[caption id="attachment_6541" align="aligncenter" width="556"] Fig 4 - Posterior view of the arterial supply to the female reproductive tract.[/caption]
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Original Author(s): Louisa Thompson Last updated: April 13, 2020
Revisions: 53
Original Author(s): Louisa Thompson Last updated: April 13, 2020
Revisions: 53
The vagina is an organ of the female reproductive tract. It is a distensible muscular tube which extends posterosuperiorly from the external vaginal orifice to the cervix.
It has several roles within the female reproductive system:
In this article, we will look at the anatomy of the vagina – its structure, innervation, vascular and lymphatic supply.
Fig 1 – Overview of the female reproductive tract.
The vagina is closely related to many of the organs in the pelvic region:
Fig 2 – Sagittal section of the female pelvis, showing the anatomical relations of the vagina.
The vagina is a fibromuscular tube with anterior and posterior walls – these are normally collapsed and thus in contact with one another.
The shape of the vagina is not a round tunnel. In the transverse plane it is more like an “H” lying on the side. At the upper ending, the vagina surrounds the cervix, creating two domes (fornices or vaults): an anterior and a (deeper) posterior one.
The posterior fornix is important as it acts like a natural reservoir for semen after intravaginal ejaculation. The semen retained in the fornix liquefies in the next 20-30 mins, allowing for easier permeation through the cervical canal.
Fig 3 – The anterior and posterior vaginal fornices
The vagina is composed of four histological layers (internal to external):
The arterial supply to the vagina is via the uterine and vaginal arteries – both branches of the internal iliac artery .
Venous return is by the vaginal venous plexus, which drains into the internal iliac veins via the uterine vein.
Lymphatic drainage is divided into three sections:
Fig 4 – Posterior view of the arterial supply to the female reproductive tract.
Innervation is predominantly from the autonomic nervous system. Parasympathetic and sympathetic nerves arise from the uterovaginal nerve plexus (in turn a subsidiary of the inferior hypogastric plexus).
Only the inferior 1/5 of the vagina receives somatic innervation. This is via a branch of the pudendal nerve , the deep perineal nerve .
A vaginal fistula is an open communication between the vagina and one of the adjacent pelvic organs.
It typically occurs as a result of prolonged labour (where a Caesarean section is not available). As the fetus slowly progresses down the vaginal wall, it exerts pressure – obstructing the blood supply and causing tissue necrosis.
There are three main types of vaginal fistulae:
Which of the following structures is found anterior to the vagina?
Try again to score 100%. Use the information in this article to help you with the answers.
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The vagina is an organ of the female reproductive tract. It is a distensible muscular tube which extends posterosuperiorly from the external vaginal orifice to the cervix.
It has several roles within the female reproductive system:
In this article, we will look at the anatomy of the vagina - its structure, innervation, vascular and lymphatic supply.
The vagina is closely related to many of the organs in the pelvic region:
The vagina is a fibromuscular tube with anterior and posterior walls - these are normally collapsed and thus in contact with one another.
The shape of the vagina is not a round tunnel. In the transverse plane it is more like an “H” lying on the side. At the upper ending, the vagina surrounds the cervix, creating two domes (fornices or vaults): an anterior and a (deeper) posterior one.
The posterior fornix is important as it acts like a natural reservoir for semen after intravaginal ejaculation. The semen retained in the fornix liquefies in the next 20-30 mins, allowing for easier permeation through the cervical canal.
The vagina is composed of four histological layers (internal to external):
The arterial supply to the vagina is via the uterine and vaginal arteries - both branches of the internal iliac artery .
Venous return is by the vaginal venous plexus, which drains into the internal iliac veins via the uterine vein.
Lymphatic drainage is divided into three sections:
Innervation is predominantly from the autonomic nervous system. Parasympathetic and sympathetic nerves arise from the uterovaginal nerve plexus (in turn a subsidiary of the inferior hypogastric plexus).
Only the inferior 1/5 of the vagina receives somatic innervation. This is via a branch of the pudendal nerve , the deep perineal nerve .
A vaginal fistula is an open communication between the vagina and one of the adjacent pelvic organs.
It typically occurs as a result of prolonged labour (where a Caesarean section is not available). As the fetus slowly progresses down the vaginal wall, it exerts pressure - obstructing the blood supply and causing tissue necrosis.
There are three main types of vaginal fistulae:
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