Puboprostaticus (males) / Pubovaginalis (females)
Pelvis & Perineum · Trunk
The puboprostaticus in males, called pubovaginalis in females, is a medial slip of the levator ani specialised to support a midline pelvic organ. It arises from the posterior surface of the body of the pubis and passes backward to blend around the prostate in males or the vagina in females, merging with the perineal body. By elevating and supporting the prostate or the vagina, it contributes to continence and helps hold these structures in their normal position against downward pressure. It is supplied by the nerve to levator ani (S3-S4).
Origin, Insertion, Action & Nerve
Origin
Posterior surface of the body of the pubis
Insertion
Around the prostate (males) or vagina (females), blending with the perineal body
Action
Supports and elevates the prostate (males) or vagina (females), aiding continence
Nerve
Nerve to levator ani (S3–S4)
Attachments explained
The Puboprostaticus (males) / Pubovaginalis (females) is defined first by where it attaches. Its origin is the more fixed anchor, usually the proximal or more stable end that stays put during contraction, while its insertion is the more mobile point that is pulled toward the origin when the muscle shortens.
Origin
Posterior surface of the body of the pubis
Insertion
Around the prostate (males) or vagina (females), blending with the perineal body
Action & function
When the Puboprostaticus (males) / Pubovaginalis (females) contracts, it produces the following movement: Supports and elevates the prostate (males) or vagina (females), aiding continence.
As part of the Pelvis & Perineum group of the Trunk, it works alongside neighbouring muscles to generate smooth, coordinated movement and to stabilise the structures it acts on.
Nerve supply & clinical relevance
The Puboprostaticus (males) / Pubovaginalis (females) receives its nerve supply from the Nerve to levator ani (S3–S4). This nerve carries fibres from spinal segment(s) S3, S4.
Because a muscle can only contract when its nerve is intact, injury to the Nerve to levator ani or to its spinal roots (S3, S4) can weaken or paralyse the Puboprostaticus (males) / Pubovaginalis (females), impairing the movements it normally produces (supports and elevates the prostate (males) or vagina (females), aiding continence). This is why knowing the innervation is central to localising nerve lesions in clinical practice.
How to study the Puboprostaticus (males) / Pubovaginalis (females) (the OIANS method)
Learn this as the sex-specific member of the pubo-named levator ani slips: the same fibres that support the vagina in females support the prostate in males, so one attachment story serves both. Because it starts on the pubis and wraps a midline organ before blending with the perineal body, its elevating and supporting action is a direct consequence of that sling arrangement.
Use its continence role as the memory hook. In females the pubovaginalis helps compress the urethra indirectly by supporting the vaginal wall, and in males the puboprostaticus steadies the prostate above the external urethral sphincter; in both, weakness contributes to prolapse and incontinence. Keeping its nerve to levator ani (S3-S4) in mind ties it back into the pelvic diaphragm family.
Frequently asked questions
Where is the Puboprostaticus (males) / Pubovaginalis (females) located?
The Puboprostaticus (males) / Pubovaginalis (females) is a muscle of the Pelvis & Perineum group, located in the Trunk.
What is the origin of the Puboprostaticus (males) / Pubovaginalis (females)?
Posterior surface of the body of the pubis
What is the insertion of the Puboprostaticus (males) / Pubovaginalis (females)?
Around the prostate (males) or vagina (females), blending with the perineal body
What movements does the Puboprostaticus (males) / Pubovaginalis (females) produce?
Supports and elevates the prostate (males) or vagina (females), aiding continence
What nerve supplies the Puboprostaticus (males) / Pubovaginalis (females)?
Nerve to levator ani (S3–S4)
Is the Puboprostaticus (males) / Pubovaginalis (females) free to study in OIANS?
The Puboprostaticus (males) / Pubovaginalis (females) is always free to browse. Its full origin, insertion, action and nerve details are open to everyone in the Muscle Directory. Quiz and Flashcard practice for the Trunk is part of the one-time Lifetime upgrade, though; only the Upper Limb decks are free to test yourself on.
Related muscles
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