The difference between intrapleural pressure and intra-alveolar pressure is
A) the driving force for air flow into and out of the lungs.
B) zero.
C) atmospheric pressure.
D) approximately 100 mm Hg.
E) transpulmonary pressure.
Answer: E) transpulmonary pressure.
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The main reason certain seeds germinate near the soil surface rather than deep in the soil is
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__________ relieve allergy symptoms by dampening
the effects of histamines. Fill in the blank(s) with the appropriate word(s).
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