During inhalation, air flows into the lungs because: The surfactant in the lungs

Question

During inhalation, air flows into the lungs because:

The surfactant in the lungs draws in air because of its adhesive properties.

Air moves passively in and out of the lungs through time.

Air pressure is greater outside the body than in the lungs and naturally flows inside once the chest has expanded.

The strong chest muscles are sucking in air.

The surfactant in the lungs draws in air because of its adhesive properties.

Air moves passively in and out of the lungs through time.

Air pressure is greater outside the body than in the lungs and naturally flows inside once the chest has expanded.

The strong chest muscles are sucking in air.

Explanation / Answer

C.) Air pressure is greater outside the body than in the lungs and naturally flows inside once the chest has expanded.

Flow of air is because of differences in pressure between the the gases inside the lungs and atmosphere .

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