Define inhalation and exhalation or which …
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Posted by Sachidanand Bebarta 4 years, 11 months ago
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Vedanshi Singh 4 years, 11 months ago
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Yogita Ingle 4 years, 11 months ago
a) Inhalation is the action of taking in air rich in oxygen. During inhalation, the rib cage moves outwards and the diaphragm contracts to move downwards. As the rib cage expands, the space in the chest cavity increases allowing air rich in oxygen enter the lungs.
b) Exhalation is the action of giving out air rich in carbon dioxide to the environment. During exhalation, the ribs move inwards and the diaphragm relaxes to return to its normal position. The contraction of rib cage reduces the size of the chest cavity. Now air rich in carbon dioxide is driven out of the lungs.
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