5. Often the lungs of premature infants havenot matured to the point where they are
producing adequate surfactant. Why might this be aproblem?
Experiment: Investigating IntrapleuralPressure
Describe what happens to air flow when one lung is“collapsedâ€.
What clinical term is used to describe the conditionof:
a collapsed lung?
air in the pleural cavity?
3. Why does air enter the pleural cavity when the valve isopen?
4. Why does the lung collapse when the valve is opened?(What forces are causing this to happen?)Â Â
      5. Does the lungreinflate once the valve is closed? What must be done in order forthe
lung to reinflate?
     6. A patient is brought tothe emergency room with a stab wound to the right side of the
chest and a collapsed lung. Why is only one lung deflated with theknife wound?
