Describe mechanism of inhaling and exhaling …
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Posted by Yash Garg 5 years, 10 months ago
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Meghna Thapar 5 years, 10 months ago
Breathing involves the movement of the diaphragm and the rib cage. Breathing involves two steps:
During inhalation, ribs move up and outwards and diaphragm moves down. This movement increases space in our chest cavity and air rushes into the lungs. The lungs get filled with air. The muscles between the ribs contract causing the rib cage to move upward and outward.
During exhalation, ribs move down and inwards, while diaphragm moves up to its former position. This reduces the size of the chest cavity and air is pushed out of the lungs. As the chest cavity becomes smaller air is pushed out from the lungs. Take a deep breath. Keep your palm on the abdomen, feel the movement of abdomen.
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