Perineal Muscles

Here is a complete list of all the muscles of the perineum:

Sphincter ani

1. External anal sphincter
2. Internal anal sphincter

Superficial perineal pouch

1. transversus perinei superficialis
2. Bulbospongiosus
3. Ischiocavernosus

Deep perineal pouch

1. Transversus perinei profundus
2. Sphincter urethrae membranaceae