颚
颚（英语：Jaw），拉解剖学中，指拉嘴巴入口处相对个铰接式结构，最常看到个用场是用来进食搭咀嚼食物。拉大多数个动物身上，侪拥有迭个解剖结构。拉人体解剖学中，又称颌，指嘴部个上下骨骼搭关节，形成了上颚搭下颚。
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