MEDICINE
RESPIRATORY MEDICINE
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Alveoli would collapse.
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Bronchi would collapse.
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Vocal cords would not vibrate.
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Epiglottis would close.
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Detailed explanation-1: -Without normal surfactant, the tissue surrounding the air sacs in the lungs (the alveoli) sticks together (because of a force called surface tension) after exhalation, causing the alveoli to collapse.
Detailed explanation-2: -It is established that pulmonary surfactant reduces surface tension at the air–water interface in the alveoli, thereby preventing collapse of these structures at end-expiration. In this manner, surfactant reduces the work associated with breathing.
Detailed explanation-3: -If you don’t have enough air coming in to inflate your alveoli or if outside pressure is pushing on them, they can collapse (atelectasis). Atelectasis can happen in a small area or the whole lung. If enough of your lung is affected, your blood may not receive enough oxygen, which can cause health issues.
Detailed explanation-4: -Decreased surfactant activity results in alveolar collapse, atelectasis, ventilation-perfusion abnormalities, decreased lung compliance, resulting in a decreased ventilation and pulmonary hypertension leading to respiratory failure. Surfactant maintains lung volumes and enhances the clearance of lung liquid.