Q:

What ensures that the lungs expand as the chest wall expands?

waelhammad
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2022-10-19
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What ensures that the lungs expand as the chest wall expands?

  1. secreted surfactant
  2. negative pressure between the pleura
  3. serous liquid secreted by the pleura
  4. the elastic recoil of the alveolar tissue
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waelhammad
2022-10-19
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B: Negative pressure (suction) causes the visceral pleura to remain in contact with the parietal pleura, so that when the chest wall & parietal pleura moves, the parietal pleura takes the visceral pleura and lungs with it. 

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