32 後下小腦動脈(posteroinferior cerebellar artery)通常起源自：
(A)基底動脈(basilar artery)
(B)脊髓前動脈(anterior spinal artery)
(C)椎動脈(vertebral artery)
(D)大腦中動脈(middle cerebral artery)

1. 題目解析題目詢問的是「後下小腦...