The ear is divided into three parts:
1. The outer ear, meaning the part of the ear you can see on the side of the head plus the ear canal leading down to the ear drum
2. The middle ear, meaning the ear drum, ear bones (ossicles) and the air spaces behind the ear drum and the mastoid cavities
3. The inner ear, meaning where the nerve endings are for the organs of hearing and balance (equilibrium).
It is the middle ear that causes discomfort during air travel, and this is so because it is an air...
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