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Surfactant reduces the surface tension within in your lungs, your alveoli have a wet surface and if surfactant were not present they would stick together causing a difficulty in expanding your thoracic cavity-so you wouldn't be able to breath without surfactant.

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12y ago
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12y ago

Surfactant is important because it forms a superficial coating over the thin layer of water coating the alveolar surface, it reduces surface tension which results from the attraction between water molecules.

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Q: Why is surfactant important in alveoli?
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