A.神經(jīng)元B.神經(jīng)纖維C.有髓神經(jīng)纖維D.無髓神經(jīng)纖維E.神經(jīng)末梢
A.包裹每條神經(jīng)纖維的結締組織B.包裹每條神經(jīng)的結締組織C.包裹每束神經(jīng)纖維的結締組織D.施萬細胞的細胞膜E.施萬細胞的基膜
A.軸突外包神經(jīng)膜細胞B.髓鞘和神經(jīng)膜都有節(jié)段性C.軸突愈粗,髓鞘愈厚,結間體愈長D.結間體愈長,傳導速度愈慢E.髓鞘具有絕緣作用