arises from the lumbar plexus and is formed by fibers of the 2nd to 3th lumbar nerves. It emerges from the medial border of the psoas major near thebrim of the pelvis,passes down into thepelvis,lateral to the ureter and dorsal tothe common iliac artery,an...[繼續(xù)閱讀]

    當病人睜眼時 能雙足站立,閉眼時搖晃或摔倒,即為 閉目難立征陽性。此試驗用于檢查共濟功能, 對檢查運動覺和位置覺有意義。運動覺和位 置覺亦可通過姿勢和步態(tài)的觀察來估價。...[繼續(xù)閱讀]

    is positive when the pa tient is able to stand with feet together and eyes open but sways or falls when the eyes are closed. Romberg sign belongs tothe test for ataxia,which is effective in demonstrating the senses of motion and position. The seneses of m...[繼續(xù)閱讀]

    在中腦與腦橋 間雙側皮質(zhì)脊髓束受到損害而中斷, 或者由于下運動神經(jīng)元病變或肌病所致的周 圍運動功能的嚴重損害時,病人全身運動部 分發(fā)生癱瘓?；颊唠m然保持清醒和知覺功能, 但除了用眼部活動來表示意思外,不能用其 他方法...[繼續(xù)閱讀]

    de scribes a condition in which patients re main awake and sentient but because of motor paralysis in all parts of the body cannot communicate except possibly by coded eye movements. several diseases cancause the condition,which results form bilateral int...[繼續(xù)閱讀]

    由第5～8頸神經(jīng)前支和第1胸 神經(jīng)前支大部分組成,位于鎖骨區(qū)的 頸外側部,自前斜角肌延至腋窩。該叢分布于 上肢、肩部及部分胸臂肌和皮膚。...[繼續(xù)閱讀]

    formed by the ventral primary divisions of the 5th to 8th cervical nerves and the most part of the first tho racic nerve. It lies in the lateral part ofthe neck in the clavicular region,extend ing from the scalenus anterior to the axil la. This plexus sup...[繼續(xù)閱讀]

    起于臂叢內(nèi)側束,由第8 頸神經(jīng)和第1胸神經(jīng)的纖維組成,初 經(jīng)腋動、靜脈之間,繼行于腋靜脈內(nèi)側,并在此發(fā)一分支與肋間臂神經(jīng)相交通,然后沿肱 動脈下行至臂中部淺出深筋膜,布于臂內(nèi)側 的皮膚。...[繼續(xù)閱讀]

    arises from the medial cord of brachial plexus and is composed of fibers of the 8th cervi cal nerve and the 1st thoracic nerve. It passes through between the axillary arteryand vein at first in the axilla,then runs laterally medial to the axillary vein wh...[繼續(xù)閱讀]

    包括邊緣葉及與之相連的皮 質(zhì)下結構。這些結構有: 杏仁體、隔 區(qū)和隔核、上丘腦、下丘腦、丘腦前核群及 中腦被蓋內(nèi)側區(qū)。它們主要與內(nèi)臟活動、情 緒和記憶有關。...[繼續(xù)閱讀]