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Normally this space is continuous with the space at the back of the mouth, but in swallowing it is shut off from the oropharynx by the soft palate pressing against the back wall. On the back wall of the nasopharynx are the openings of the EUSTACHIAN TUBES and, in childhood, the ADENOIDS. Nasopharynx The passage that connects the nasal cavity to the top of the throat.
Tube Troubles. The Eustachian tube is a small passageway from your inner ear to the back of your nose, and plays an important part in the hearing process. Every time you swallow, yawn, or blow your nose, the Eustachian tube opens and allows air to pass from the middle of your ear to the back of your nose. This process equalizes the pressure in our ears, and prevents the eardrum from bulging in or out too much.