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Sphincter urethrovaginalis

Other Terms: Musculus sphincter urethrovaginalis, Muscle sphincter urétro-vaginal

Muscle parts

None

Latin name

Musculus sphincter urethrovaginalis (female)

Latin muscle parts

None

Group

Pelvis/perineal wall – lateral musculature – middle layer

Etymology

In English, this muscle’s name is the muscle that binds tight around the urine maker and sheath. The word sphincter comes from the Greek sphinkter meaning “that which binds tight,” which in turn comes from the Greek verb sphingein meaning “to bind tight.” The word urethrae arises from the Greek ourethra meaning “to make urine.” This comes from the Greek ouron meaning “urine.” This is an ancient term that is traceable back to the time of Hippocrates. The Latin word vagina means “sheath,” referring to the sheath like relationship formed with the penis during intercourse.

Origin

Perineal body.

Insertion

Joins opposite muscle to form a sling like aponeurosis on anterior side of urethra.

Action

Elongate and compress urethra and vagina.

Nerve supply

Perineal branches of the pudendal nerve (S2, S3, and S4)

Blood supply

Internal pudendal artery from the internal iliac artery.

Latin

Musculus sphincter urethrovaginalis

French

Muscle sphincter urétro-vaginal

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