Labels:background | booth | box | dog | earth | fence | house | light | sconce | tree OCR: HELP The Ears Page The ear also detects head movements and helps you balance. It does this by using three semi-circular canals and two sacs filled with liguid. When you move your head the liquid in the canals and sacs moves The liquid stimulates sensory cells in the sacs causing the cells to send messages to the brain about the position of the head. positior
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