Premature infants may not produce surfactants in the alveoli of their lungs.What implications does this have for their health and survival?

Question

Quizplus · Accepted Answer

Surfactants are phospholipid molecules that reduce the surface tension of fluids in the alveoli of the lungs, preventing the collapse of the alveoli during exhalation. Premature infants who do not produce surfactants may experience respiratory distress syndrome, which can lead to insufficient oxygenation, lung collapse, and difficulty breathing. As a result, these infants are at a higher risk of morbidity and mortality. Option A is incorrect because surfactants do not affect the partial pressure of oxygen directly, but rather prevent the collapse of the alveoli. Option C is incorrect because surfactants are not responsible for trapping pollutants, but rather for reducing surface tension. Option D is incorrect because surfactants decrease, rather than increase, the surface tension of alveolar fluids.

Premature Infants May Not Produce Surfactants in the Alveoli of Their