Prostatic utricleExternal urethralsphincter (skeletal muscle)COpenings ofejaculatory ductsOpenings ofducts of glandularelements of prostateProstateInternal urethral sphincter(smooth muscle)Urethral crestSeminal colliculusGlandular elementsof prostateFibromuscularstroma(smooth muscle andfibrous connective tissue)Deep perineal pouchPerineal membraneProstatic sinuses