19.下列那一解剖結構是於手術中為尋找外頸動脈(external carotid artery)的指標?
(A)側枝韌帶(collateral ligament)
(B)蝶下顎韌帶(sphenomandibular ligament)
(C)莖下顎韌帶(stylomandibular ligament)
(D)水平韌帶(horizontal ligament)

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統計: A(5), B(88), C(523), D(3), E(0) #1727627