During auscultation of the lungs:
A) it is normal to hear the sliding of the parietal and visceral layers of pleura.
B) it is normal to hear the movement of the pleural fluid.
C) pleural rub sounds indicate pleuritis or pleurisy.
D) pleural rub sounds indicate a loss of negative pressure in the pleural cavity.
E) pleural rub sounds indicate pneumonia.
Ans: C
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