A.骨骼輕巧,運(yùn)動(dòng)靈活
B.由64塊骨構(gòu)成
C.排列簡(jiǎn)單
D.肌肉較少
E.神經(jīng)分布簡(jiǎn)單
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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
A.成人脊髓頸1~4節(jié)段與同序數(shù)椎體相對(duì)應(yīng)
B.頸5~8和胸1~4節(jié)段與同序數(shù)椎體上一個(gè)相對(duì)應(yīng)
C.胸5~8節(jié)段與同序數(shù)椎體上兩個(gè)相對(duì)應(yīng)
D.胸9~12節(jié)段與同序數(shù)椎體上三個(gè)相對(duì)應(yīng)
E.腰1~5節(jié)段與第8~10胸椎體相對(duì)應(yīng)
A.起自節(jié)段性動(dòng)脈的脊支
B.腰段來(lái)自腰動(dòng)脈
C.骶尾段來(lái)自骶外側(cè)動(dòng)脈
D.隨脊神經(jīng)穿椎間孔入椎管分為前、后根動(dòng)脈和脊膜支
E.腰5節(jié)段以下供血貧乏
A.脊髓前動(dòng)脈
B.髓后動(dòng)脈
C.根動(dòng)脈
D.頸橫動(dòng)脈
E.肋間后動(dòng)脈和肋下動(dòng)脈
A.位于蛛網(wǎng)膜外側(cè)
B.向上經(jīng)枕骨大孔與顱內(nèi)相應(yīng)腔隙相通
C.腔內(nèi)充滿腦脊液
D.向下達(dá)第2骶椎高度并形成終池
E.外側(cè)包裹脊神經(jīng)根形成脊神經(jīng)周?chē)?/p>
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