It 's comprised of complicated anatomical pathways , and likewise , examination requires the use of multiple bits of unavailable kit the elusive ophthalmoscope , again ( any tool that is both very expensive and very portable is doomed in hospital ) , special pins , wisps of cotton wool and a tendon hammer .

神经系统有着复杂的解剖路径，检查也需要使用多种常常没有的仪器比如前面说的检眼镜（医院里任何兼具昂贵和便携两种特性的仪器都必然会不见），以及特殊微针、棉条、筋腱槌。