TOPICS: Internal urethral sphincters, external urethral sphincter, anal sphincter, levator ani muscles, perineal body, pudendal nerve, pelvic floor, anus, pelvic organs, episiotomy, kegel exercises, pelvic organ prolapse, rectocele, cystocele, stress incontinence, bulbospongiosus muscle, ischiocavernous muscle, superficial transverse perineal muscle, perineal body, external anal sphincter, sacrum, uterus, urinary bladder, labium minora, labium majora, cliteris, pubic bone