What is the result of the difference between the pressure within the pleural space and the pressure of the outside air?
a. It allows the lungs to push oxygen out into the bloodstream.
b. It prevents the lungs from collapsing on exhalation.
c. It pulls air into the pleural space.
d. It pushes air from the pleural cavity into the lungs.
B
The pressure of the pleural space has less than the pressure of outside air, which prevents the lungs from collapsing on exhalation.
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