Perineal membrane is not a muscle. Guess that's itFound this on https://teachmeanatomy.info/pelvis/muscles/pelvic-floor/The main muscles for the pelvic floor is the pubococcygeus muscle, puborectalis and the iliococcygeus
骨盆底肌 : 提肛肌群 + 尾骨肌
提肛肌群 : 髂尾肌 + 恥尾肌 + 恥骨直腸肌
77.有關骨盆底肌的敘述,下列何者錯誤? (A)尾骨肌(coccygeus)是..-阿摩線上測驗