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Explain the process of breathinh in …

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Explain the process of breathinh in human beings

Posted by Pulkit Upadhyay 4 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Secret ??? 4 years, 11 months ago

Humans respires or breath through a pair of lungs. During inhalation chest cavity goes forward and downwards and inhalation, the diaphragm contracts and flattens and the chest cavity enlarges. This contraction creates a vacuum, which pulls air into the lungs. During exhalation, chest cavity goes backwards and upwards and the diaphragm relaxes and returns to its domelike shape, and air is forced out of the lungs.

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CBSE > Class 10 > Science