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EXPLAIN THE MECHANISM OF INSPERATION AND EXPERATION?

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Please find below the solution to the asked query         
                                                   
​The breathing involves two processes: Inhalation and exhalation.

During inhalation, the diaphragm moves down and the ribs move upwards and outwards, thereby increasing the space in the chest cavity. This leads to the movement of air inside the lungs.

During exhalation, the diaphragm moves to its former position and the ribs move downwards and inwards, thereby reducing the size of the chest cavity. This leads to the movement of air out of the lungs.

      













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During inspiration, the outer intercostal muscles contract which raises the chest cavity or the ribs. This is accompanied by the lowering of the diaphragm. Together these movements serve to increase the area of the thoracic cavity which reduces the pressure. The air from outside rushes into the lungs.

During expiration or exhalation the inner intercostal muscles contract bringing the ribs back to the original position and the diaphragm is also raised back. This reduces the space in the chest cavity and increases the pressure. This expels the air out of the lungs.
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