[TA] muscle of urogenital triangle; origin, ramus of ischium; insertion, corpus cavernosum penis (or clitoridis); action, compresses the crus of the penis (or clitoris) forcing blood in its sinuses into the distal part of the corpus cavernosum and diminishing egress of venous blood; nerve supply, pudendal (perineal). SYN: musculus ischiocavernosus [TA], musculus erector clitoridis, musculus erector penis.
