Question

Explain inhalation and exhalation cycle in human

Answer 1

when we inhale the gas from atmosphere, our ribs and lungs gets expanded . Now the pressure inside the lungs gets decreased and thus the air reaches to the lungs

Here, exchange of gas takes place through diffusion and oxygen gets absorbed

Now,the CO2 needs to be released

During exhalation,the ribs and the lungs gets contacted and hence, pressure inside the lungs decreases. Because of this, the CO2 gets out from the lungs

here,1 cycle gets completed

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Answer 2

Explanation:

During inhalation, the lungs expand with air and oxygen diffuses across the lung's surface, entering the bloodstream. During exhalation, the lungs expel air and lung volume decreases. ... During exhalation, the diaphragm is relaxed which decreases the volume of the lung cavity.