1. (2023四上·确山期中) 外耳道                                  传递振动到内耳
鼓膜                                     传递声音到鼓膜
听小骨                                  将神经信号传递到大脑
耳蜗                                     将声音转化为振动
听觉神经                              将振动转化为神经信号
耳郭                                     收集声音