人耳最外边的部分叫耳廓,沿着耳廓往里走是外耳道,外耳道的底部是耳膜,和耳膜相连接的是听鼓链,继续往里走叫内耳,它们之间是中耳。和内耳相连接的有听觉神经,它起到了一个传导神经的作用。外部的声音通过耳廓到达鼓膜,鼓膜的振动使听鼓链产生震动,结果是使内耳的膜细胞产生感 The outermost part of the human ear is called pinna, walking along the pinna is the external auditory canal, the bottom of the external auditory meatus is the eardrum, and the eardrum is connected to listen to the drum chain, continue to go inside to call the inner ear, between them is the middle ear. The auditory nerve, attached to the inner ear, acts as a conduction nerve. The external sound reaches the tympanic membrane through the pinna, and the vibration of the tympanic membrane causes vibration of the listening drum chain. As a result, the inner ear membrane cells produce sensation