Otoconia are

Nerve fibres

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Ear stones

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Sensory hair

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None of the above

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Solution

The correct option is B Ear stones
Otoconia are crystals made of calcium carbonate. They are found in the saccule and utricle of ear. They are commonly called as ear rocks or ear stones and may fall into inner ear. They appear like mixture of concrete and straw. The outer part of otoconia is made up of calcium and the inner part consists of a matrix. If otoconia fall into inner ear, they get dissolved and reabsorbed into labyrinth.
So, the correct answer is 'Ear stones'.

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