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耳司听,又司身体平衡,是一个重要感觉器官。它分外耳、中耳和内耳三个部分。中耳和内耳包含着许多重要和微小的结构。例如分隔外耳道和中耳的鼓膜是一层薄膜;又如互相连接成链的三个听小骨,大小都仅相当于一粒碎米。鼓膜和听骨都是传导声音的重要结构,损坏后可使听力下降。中耳骨壁内又埋藏着面神经,损坏后将引起面瘫,
Ear to listen, and the Secretary of physical balance, is an important sense organ. It is exceptionally ear, middle ear and inner ear three parts. Middle and inner ears contain many important and minor structures. For example, the outer ear canal and the middle ear separation of the tympanic membrane is a thin film; Another example, linked to each other into a chain of three ossicles, the size is only equivalent to a broken rice. The tympanic membrane and the ossicles are important structures that carry the sound and can cause hearing loss after damage. The middle ear bone wall and buried facial nerve damage will cause facial paralysis,