文档介绍：首都医科大学附属北京天坛医院神经内科鞠奕耳的解剖耳的解剖 Copyright ? 2003 Pearson Education, Inc. publishing as Benjamin Cummings ?耳的解剖结构分为三部分: ?外耳?中耳?内耳 Figure 外耳: 外耳: Copyright ? 2003 Pearson Education, Inc. publishing as Benjamin Cummings ?仅与听觉相关?外耳的结构?耳廓?外听道 Figure 外听道: 外听道: Copyright ? 2003 Pearson Education, Inc. publishing as Benjamin Cummings ?位于颞骨内狭窄的管腔?与皮肤相连?耵聍腺体所在?终点位于鼓膜中耳或称鼓室中耳或称鼓室 Copyright ? 2003 Pearson Education, Inc. publishing as Benjamin Cummings ?颞骨内充满气体的空腔?仅与听觉相关?两个开口中耳或鼓室中耳或鼓室 Copyright ? 2003 Pearson Education, Inc. publishing as Benjamin Cummings ?与内耳相关的两个管道: ?开口于听道,被鼓室膜覆盖?咽鼓管将中耳与咽部连接?在打哈欠和吞咽时缓解压力?这个管在其他时候是塌陷的鼓室的骨性结构鼓室的骨性结构 Copyright ? 2003 Pearson Education, Inc. publishing as Benjamin Cummings ?鼓室内有三块小骨?锤骨?砧骨?蹬骨 Figure 鼓室的骨性结构鼓室的骨性结构 Copyright ? 2003 Pearson Education, Inc. publishing as Benjamin Cummings ?震动觉从鼓膜传向锤骨-砧骨-蹬骨?这三块小骨将声音传向内耳 Figure 内耳内耳( (骨迷路和膜迷路) 骨迷路和膜迷路) Copyright ? 2003 Pearson Education, Inc. publishing as Benjamin Cummings ?既是听觉器官又是平衡器官骨迷路骨迷路 Copyright ? 2003 Pearson Education, Inc. publishing as Benjamin Cummings ?颞骨内的骨性组织: ?耳蜗?前庭?骨性半规管