Which of the following statements is NOT true regarding the normal mechanism of ventilation?
A) There must be a continuous column of air from the pharynx to the alveoli.
B) The lungs must lie within a sealed-off thoracic cavity.
C) The inner and outer pleural membranes must be separated by a thin film of fluid.
D) The intrapleural pressure must be greater than the atmospheric pressure.
E) The diaphragm,when contracted,will be lowered.
Correct Answer:
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