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单项选择题
A.前壁由锁胸筋膜、筛状筋膜组成
B.后壁为四边孔和三边孔
C.外侧壁由肱骨结节间沟、肱二头肌短头和喙肱肌组成
D.底由"腋悬韧带"围成
E.顶由锁骨内1/3、第1肋围成
单项选择题
A.肱骨头、肱骨小头、尺骨头中心各点的连线
B.肱骨头、桡骨头、尺骨茎突各点的连线
C.肱骨大结节、桡骨头、尺骨头各点的连线
D.喙突、桡骨头、尺骨头各点的连线
E.肱骨头、桡骨头、尺骨茎突各点的连线
单项选择题
A.桡骨茎突、拇长伸肌腱、桡侧腕长深肌腱
B.桡骨茎突、拇长展肌、
C.拇短深肌
D.桡骨茎突、拇长展肌腱、拇短伸肌腱
E.桡骨茎突、拇长展肌腱、拇短伸肌腱、示指伸肌腱
单项选择题
A.lies between dura matter and arachnoid
B.up to subarachnoid space in the skull by the foramen magnum
C.down the the height of the fifth sacral vertebral
D.terminal cistern is formed by the space below the second sacral vertebral
E.the fluid in it can communicate with that in the center canal of spinal cord directly