單項(xiàng)選擇題

肱骨外科頸骨折時(shí),??砂橛腥羌〉陌c瘓,這是因?yàn)閾p傷了從臂叢后束發(fā)出的,并穿過四邊孔的神經(jīng),請(qǐng)問該神經(jīng)是()

A.肩胛下神經(jīng)
B.胸長(zhǎng)神經(jīng)
C.胸背神經(jīng)
D.腋神經(jīng)
E.橈神經(jīng)

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