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término		definición
eustachian tube empezar lección		a narrow passage leading from the pharynx to the cavity of the middle ear, permitting the equalization of pressure on each side of the eardrum.
inner ear empezar lección		the part inside the ear that controls balance and the ability to hear, and contains the cochlea
vestibular system empezar lección		is a sensory system that creates the sense of balance and spatial orientation for the purpose of coordinating movement with balance
sensory hair cells empezar lección		are responsible for relaying sound information to the brain.
prevention empezar lección		the action of stopping something from happening

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