33.下列關於神經之興奮或抑制，與排尿(micturition)相關肌肉之動作的配對，何者正確？ (A)興奮副交感神經(parasympathetic nerve)：尿道內括約肌(internal urethral sphincter)收縮 (B)興奮副交感神經(parasympathetic nerve)：逼尿肌(detrusor muscle)收縮 (C)抑制隨意運動神經(voluntary motor nerve)：尿道外括約肌(external urethral sphincter)收縮 (D)抑制交感神經(sympathetic nerve)：逼尿肌(detrusor muscle)放鬆