MusclePerineum
Transversus perinei (superficial and deep)
Mm. transversi perinei
- Location:
- Pelvis
Origin
Rami of the ischium.
Insertion
Central perineal body (with bulbospongiosus fibres).
Action
Stabilise the perineal body — the keystone of pelvic floor support and the anchor for anal and urethral sphincters.
Nerve supply
Pudendal nerve (S2–S4).
Blood supply
Perineal artery.
Clinical relevance
The perineal body they weave is the surgical target of external anal sphincter repair; obstetric tears here (third/fourth degree) demand systematic reconstruction.
Educational anatomy reference, not medical advice. About this content.