人的下巴在解剖学上被称为“下颌骨”（Mandible）。下颌骨是人体最大的单块颅骨，位于面部下方，支撑着下唇和下颌，参与咀嚼和发音等功能。
以下是一个简化的下巴（下颌骨）结构图：
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「点击下面查看原网页 领取您的八字精批报告☟☟☟☟☟☟」