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The walls of the alveoli are composed of two types of cells, type i and type ii alveolar cells. the function of type ii alveolar cells is to ________. the walls of the alveoli are composed of two types of cells, type i and type ii alveolar cells. the function of type ii alveolar cells is to ________.

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The answer would be: secrete surfactant

Type II alveolar cells will secrete surfactant that will reduce the surface tension of the alveoli. A high surface tension will cause the lungs hard to inflate when doing inspiration. Respiratory distress in premature baby mostly caused by surfactant deficiency as their lungs can't produce it. 

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