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If you’re on a rollercoaster or a boat that’s moving up and down, the fluid in your inner ears might take a while to stop moving. In turn, the brain tells your body how to stay balanced. These movement and balance sensors send electrical nerve messages to your brain. The semicircular canals are connected by “sacks” in the vestibule that have more fluid and hairs in them.
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When your head moves around, the fluid inside the semicircular canals shift around. This helps them measure motions no matter what position you’re in. The semicircular canals sit at right angles to each other. The hairs act like sensors that help you with your balance. They’re filled with liquid and lined with fine hairs, just like in the cochlea, except these hairs pick up body movements instead of sounds. The 3 semicircular canals are loop-shaped tubes in the inner ear. The balance parts of the inner ear are the vestibule and the semicircular canals. The electrical signals are sent to the brain through the hearing (auditory) nerves.The “dancing” hairs in the cochlea convert the movement from sound waves into electrical signals.The movement of fluid in your inner ear makes the tiny hairs in the cochlea bend and move.The movement from the middle ear leads to pressure waves that make the fluid inside the cochlea move.
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