Which of the following are anatomic alterations that occur when a person has a pneumothorax?
1. The lung on the affected side collapses.
2. The visceral and parietal pleura separate.
3. The visceral pleura adheres to the parietal pleura.
4. The chest wall moves outward.
a. 1, 3
b. 3, 4
c. 2, 4
d. 1, 2, 4
D
When air is introduced between the visceral and parietal pleura, the pleura will separate, leading to lung collapse and the outward movement of the chest wall.
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