12. 可使聲門變大且起端為環狀軟骨的喉內在肌 ( intrinsic muscles of the larynx ) 為何?
(A) 環杓後肌 ( posterior cricoarytenoid )
(B) 環甲肌 ( cricothyroid )
(C) 環杓側肌 ( lateral cricoarytenoid )
(D) 杓肌 ( arytenoid )
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統計: A(215), B(55), C(47), D(32), E(0) #1203918
統計: A(215), B(55), C(47), D(32), E(0) #1203918