Question

give suitable explanation why does the gaseous exchange continue in the lungs even during expiration

Answer 1

hello,
the gaseous exchange continue in the lungs even during expiration because, even though you are exhaling, there is still air, and still oxygen in your lungs

hope u got it

Answer 2

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=> It is because even after exhalation, a small volume of air (about 1200 ml) remains in the lungs. This is called the residual volume of air and it circulates through the alveolar capillaries, thus helping in the gaseous exchange of hair even during expiration.