A.延髓受壓和局部神經(jīng)受牽拉 B.頸髓神經(jīng)根 C.脊髓 D.小腦 E.阻塞腦脊液循環(huán)通路
A.100° B.115° C.130° D.145° E.160°
A.1 B.2 C.3 D.4 E.5