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Muscular Layer of Vagina (Posterior Wall; Left)
Urogenital System

Muscular Layer of Vagina (Posterior Wall; Left)

Tunica muscularis vaginae

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Structure/Morphology

The muscular layer of the vagina consists of two indistinct layers of smooth muscle, a circular layer lying close to the mucosa of the vagina, and a longitudinal layer adjacent to the adventitia (outer) of the vagina (Standring, 2020).

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Muscular Layer of Vagina (Posterior Wall; Left)
Muscular Layer of Vagina (Posterior Wall; Left)
Muscular Layer of Vagina (Posterior Wall; Left)

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Key Features/Anatomical Relations

The muscular layer lies between the mucosal layer and the adventitial layer.

Function

The muscular walls of the vagina support the bladder (anteriorly) and the rectum (posteriorly). The muscular layer can distend during childbirth.

References

Standring, S. (2020) Gray's Anatomy: The Anatomical Basis of Clinical Practice. 42nd edn.: Elsevier Health Sciences.

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