Muscles (actions and innervation) - Perineum Flashcards by Matthew Bressan | Brainscape

Q

Bulbospongiosus m.

A

Actions:

Male: Empties urethra, maintains erection, and contracts during ejaculation
Female: Constricts vaginal orifice and contributes to erection of the clitoris

Inntervation: Perineal branch of the pudendal nerve

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Q

Ischiocavernosus m.

A

Action: Compresses crus during erection

Innervation: Perineal branch of the pudendal nerve

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Q

Sphincter Ani Externus m.

A

Actions: Closes anal canal and fixes perineal body

Innervation: Inferior rectal branch of the pudendal nerve

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Q

Sphincter Urethrae m.

A

Action: Compresses urethra

Innervation: Perineal branch of the pudendal nerve

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