Question

When the diaphragm flattens and the volume of chest cavity is increased.

Its internal pressure decreases and the air from the outside rushes into

lungs. This is called expiration (exhalation)

Rewrite the sentence by making necessary correction.​

Answer 1

Answer:

The relaxation of the inspiratory muscles results in a decrease in the volume of the thoracic cavity. The elastic recoil of the previously expanded lung tissue allows them to return to their original size. As per Boyle's law, a decrease in lung volume results in an increase in the pressure within the lungs.