ischiocavernous muscle is·chi·o·cav·er·nous muscle (ĭs'kē-ō-kāv'ər-nəs)
n.
A muscle with origin from the ramus of the ischium, with insertion into the corpus cavernosum of the penis or of the clitoris, with nerve supply from the perineal nerve, and whose action compresses the crus of the penis or of the clitoris and forces blood in its sinuses into the distal part of the corpus cavernosum.