Question

describe the mechanism of the air and out from the lungs​

Answer 1

Explanation:

The diaphragm contracts and flattens and the intercostal muscles contract to pull the ribs up and out. The increased volume within the thoracic cavity lowers the pressure within the lungs with respect to the atmospheric pressure. ... As a result, air moves out of the lungs down a pressure gradient.

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Answer 2

Answer:

the air entered through the nose goes down the wind pipe to the lungs. The oxygen in it is then separated and sent to the heart. The oxygen is then mixed into the blood and then pumped into all parts of the body.the oxygen is then combined with carbon from fats.this carbon dioxide is then sent out of the nose along with the other gases of the air.