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Vestibular Sense

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Why is the vestibular sense generally useless under conditions of weightlessness?

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Why the vestibular sense is generally useless under conditions of weightlessness is given.

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1. Why is the vestibular sense generally useless under conditions of weightlessness?

The vestibular sense is a sensory mechanism located in the ear, which needs to be stimulated by CHANGES in body motions. Therefore, in conditions of weightlessness, the vestibular sense is at least seriously compromised due to the lack of stimulation (e.g., in space travel). Motion and changes in body positions activate the vestibular sense, which is basically absent in conditions of weightlessness.

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Specifically, the vestibular sense is our sense of balance. The receptors for the sense of balance are three semi-circular canals and two adjoining sacs. All of these receptors are fluid-filled and ...

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