BULBOSPONGIOSUS

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