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(B) The inner ear consists of two main functional parts: the cochlea,which is responsible for hearing,and the vestibular apparatus,which is responsibl

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Vestibular apparatus

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(B) The inner ear consists of two main functional parts: the cochlea,which is responsible for hearing,and the vestibular apparatus,which is responsible for maintaining the balance of the body and posture.During travel,especially at higher altitudes or on winding roads,the vestibular apparatus (comprising the semicircular canals and the otolith organs,i.e.,the saccule and utricle) gets disturbed due to rapid changes in motion and orientation.This disturbance leads to symptoms like dizziness,nausea,and vomiting,commonly known as motion sickness.Therefore,the correct option is $B$.

While travelling at a higher altitude,a person complains of dizziness and vomiting sensation. Which part of the inner ear is disturbed during the journey?

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