Puboanalis muscle
Musculus puboanalis
- Latin synonym: Musculus puborectalis
- Synonym: Puborectalis muscle
- Related terms: Puboanalis
Definition
Origin: pubic bone
Insertion: the perineal body and the rectum.
Nerve: Levator ani nerve (S4) - inferior rectal nerve from pudendal nerve (S3, S4) - coccygeal plexus
Action: Supports the viscera in pelvic cavity
Description: The puboanalis muscle (Puborectalis; sphincter recti) is the part of the levator ani composed by a U-shaped muscle loops around the anorectal junction, contributing to the maintenance of the anorectal angle, which is crucial for continence. It originates from the pubic bone and inserts into the perineal body and the rectum.
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