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What does each part of the illustrated lung model represent in relation to the human breathing system? Parts of the lung model 1. straw inserted on top of the bottle 2. plastic bottle 3. 2 small straws 4. 2 small balloons 5. big balloon at the bottom 1. system Trachea F chest cavity Pharynx / larynx lungs diaphragm 2. What happens to the two small balloons inside as you pull down the big balloon at the bottom of the model? 3. What happens to the two small balloons as you push up the big balloon at the bottom? 4. How does the movement of the diaphragm cause the air go in and out of the lungs? 5. What might happen if you make a hole using a pointed object to any of the two small balloons?
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