Question

 神經(jīng)沖動在體內(nèi)遵循的傳導(dǎo)途徑是（    ）  

A.樹突→突觸→軸突→神經(jīng)元細(xì)胞體    B.樹突→突觸→神經(jīng)元細(xì)胞體→軸突

C.軸突→神經(jīng)元細(xì)胞體→樹突→突觸    D.樹突→神經(jīng)元細(xì)胞體→軸突→突觸

Answer 1

D 

解析:

神經(jīng)沖動在細(xì)胞間的傳遞只能有上一神經(jīng)元的軸突到下一神經(jīng)元的樹突，樹突是神經(jīng)元接受神經(jīng)沖動的部位，然后傳到神經(jīng)原的細(xì)胞體，經(jīng)過軸突，軸突是神經(jīng)信號從神經(jīng)元的傳出部分。最后到突觸，在傳遞到下一個細(xì)胞。D正確