Question

Breathing is a complex process constitutes inspiration and expiration. Explain the

mechanism of inspiration during respiration in human being.​

Answer 1

Answer:

Inspiration occurs when the diaphragm and the external intercostal muscles contract. Expiration occurs when the diaphragm and the intercostal muscles relax. The contraction or relaxation of muscles around the lungs changes the entire volume of air inside the lungs, and so does the pressure.

Answer 2

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• The breathing in human beings takes place through the organs called lungs. The taking in of air rich in oxygen into the body during breathing is called 'inhalation' and giving out (or expelling) the air rich in carbon dioxide is called 'exhalation'. Both, inhalation and exhalation take place regularly during breathing.