Human Anatomy: Muscle Groups

Human Anatomy

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Muscle Function & Other Pertinent Medical Information
ORIGIN: Perineal body (and midline raphe over corpus spongiosum in male)
INSERTION: Superficial perineal membrane and dorsal penile/clitoral aponeurosis
ACTION: Male:assists emptying of urine and ejaculate from urethra. Female: closes vaginal introitus
NERVE: Perineal branch of pudendal nerve (S2, 3, 4)

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