otoliths

/ˈoʊtəˌlɪθs/
noun
  1. Small calcium carbonate structures in the inner ear that help with balance and sensing gravity and movement.
    • Otoliths in your inner ear shift when you move your head, helping your brain know which way is up.
    • When otoliths become dislodged, a person may experience vertigo or a spinning sensation.
    • Fish have large otoliths that scientists study to learn about their age and environment.
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