Respuesta :
Without surfactant, the surface tension of the liquid in the alveoli would be greater and the alveoli would collapse.
What is surfactant?
Surfactants are wetting angents, that lower the surface tension between two liquids, between a gas and a liquid, or between a liquid and a solid.
The primary purpose of surfactants is lowering of surface tension between, liquids, gases, solid.
Thus, without surfactant, the surface tension of the liquid in the alveoli would be greater and the alveoli would collapse.
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