What is the function of surfactant in the mammalian respiratory system?

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Quizplus · Accepted Answer

Surfactant is a lipid-containing substance produced by specialized cells in the lungs called type II alveolar cells. Its function is to reduce surface tension in the fluid covering the alveoli, which helps to prevent their collapse during exhalation and promotes gas exchange by allowing air to enter and exit the lungs more easily. Without sufficient surfactant production, premature infants and adults with certain medical conditions can develop respiratory distress syndrome, which is characterized by breathing difficulties and low blood oxygen levels.

What Is the Function of Surfactant in the Mammalian Respiratory