Explain Mechanism of breathing?

1.	Explain Mechanism of breathing?
Answer» Yaa i hve Anyone have second preboard question paper of all subject please. 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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