Saunders Respiratory Practice

Surfactant plays a crucial role in the functionality of the lungs by helping to reduce surface tension within the alveoli, which are the tiny air sacs where gas exchange occurs. By lowering surface tension, surfactant prevents the alveoli from collapsing during exhalation, ensuring that they remain open and ready for the next inhalation. This function is vital for maintaining adequate gas exchange and efficient breathing. The presence of surfactant increases lung compliance, making it easier for the lungs to expand and contract during respiration. Overall, its primary role is to facilitate normal respiratory mechanics and promote optimal lung function.