Expected normal percussion tones include:
a. dullness over the lungs.
b. hyperresonance over the lungs.
c. tympany over an empty stomach.
d. flatness over an empty stomach.
C
A normal lung produces resonance percussion tones, whereas an empty stomach is expected to produce tympany. Dullness indicates atelectasis of the lung. Hyperresonance over the lungs in-dicates emphysema. Flatness occurs over muscle.
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