68.附圖影像中箭頭所指之處,為下列何種構造?
(A)頦結節(genial tubercle)
(B)頦棘(mental spine)
(C)外斜嵴(external oblique ridge)
(D)下顎舌骨嵴(mylohyoid ridge)

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統計: A(0), B(0), C(2), D(10), E(0) #3974547