Question

【題目】短跑運(yùn)動員一聽到槍聲就跑，這一反射的神經(jīng)沖動傳遞的途徑是（　�。�
A.耳→傳入神經(jīng)→脊髓→傳出神經(jīng)→肌肉
B.耳→傳入神經(jīng)→大腦→傳出神經(jīng)→肌肉
C.皮膚→傳入神經(jīng)→脊髓→傳出神經(jīng)→肌肉
D.皮膚→傳入神經(jīng)→大腦→傳出神經(jīng)→肌肉

Answer 1

【答案】B
【解析】短跑運(yùn)動員一聽到槍聲就跑，這一反射的神經(jīng)沖動傳遞的途徑是：耳蝸（感受器）→傳入神經(jīng)（位聽神經(jīng)神經(jīng)）→大腦皮層（如聽覺中樞、軀體運(yùn)動中樞等）→傳出神經(jīng)→肌肉（效應(yīng)器）．
故選：B．