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4. What effect on the collapsed lung in the left side of the glass bell jar did you observe when you closed the valve? Howwell did the results compare with your prediction?5. What emergency medical condition does opening the left valve simulate?6. In the last part of this activity, you clicked the Reset button to draw the air out of the intrapleural space and return thelung to its normal resting condition. What emergency procedure would be used to achieve this result if these were the lungsin a living person?7. What do you think would happen when the valve is opened if the two lungs were in a single large cavity rather thanseparate cavities?