简述外耳的功能。
外耳由耳郭和外耳道组成。耳郭具有集音作用,很多动物都能通过转动耳郭来探测声源方向。人的耳郭运动能力已退化.但可通过转运颈部来达到同样的目的。
扫描二维码免费使用微信小程序搜题/刷题/查看解析。
版权声明:本文由翰林刷题小程序授权发布,如需转载请注明出处。
本文链接:https://doc.20230611.cn/post/1010516.html
上一篇:试述商业银行的接管制度。
下一篇:Our children and grandchildren may not have a chance to visit many of the most famous places around the world. War, weather, age, traffic and pollution damage these famous places. Looking after these places often costs more than one country can affor