1.

The figure above shows a model of lungs using a pair of balloons and an elastic membrane-tethered to a bottle whose wide end has been removed. When the elastic membrane is pulled, the red balloons expand. The elastic membrane represents which part of the respiratory system?

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Lung

The figure above shows a model of lungs using a pair of balloons and an elastic membrane-tethered to a bottle whose wide end has been removed. When the elastic membrane is pulled, the red balloons expand. The elastic membrane represents which part of the respiratory system?




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