21. 有關於排尿(micturition)的動作之描述，何者正確?
(A)逼尿肌(detrusor)收縮，內尿道擴約肌(internal urethral sphincter)舒張，產生排尿
(B)detrusor relaxation，external urethral sphincter contraction， then micturition
(C)detrusor relaxation，internal and external urethral sphincters contraction， then micturition
(D)detrusor contraction，internal and external urethral sphincter relaxation，then micturition

答案：登入後查看
統計： A(3), B(0), C(0), D(4), E(0) #898008