smd8Bolemtony
smd8Bolemtony
27-11-2016
Health
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What is the role of the eustachian tube?
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pandamille
pandamille
27-11-2016
What is the role of the eustachian tube?
It has the role of draining the fluids in the inner ear and regulating the pressure in the ears to protect the eardrum.
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