The function of surfactant is/are:

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(D) Surfactant is a lipoprotein secreted by specialized cells within the alveolar epithelium. Its primary function is to reduce the surface tension of

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All the above

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(D) Surfactant is a lipoprotein secreted by specialized cells within the alveolar epithelium. Its primary function is to reduce the surface tension of the fluid lining the alveoli. By reducing surface tension,it prevents the collapse of alveoli during expiration,thereby maintaining their stable size. Additionally,it decreases the effort required to inflate the lungs,thus facilitating lung expansion during inspiration. Therefore,all the mentioned options are correct.

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