1.7.2 脊神經(jīng)
神經(jīng)病學(xué)

        脊神經(jīng)自脊髓發(fā)出,經(jīng)椎間孔離開椎管,分布于軀干和四肢。脊神經(jīng)有31對,即頸神經(jīng)8對、胸神經(jīng)12對、腰神經(jīng)5對、骶神經(jīng)5對和尾神經(jīng)1對。每一個(gè)脊神經(jīng)由前根和后根在椎間孔處合成。前根屬運(yùn)動性,由脊髓前角和側(cè)角細(xì)胞的軸突組成    （共 2451 字）     [閱讀本文] >>