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:

Explanation:

When the diaphragm flattens and the volume of the chest cavity is increased. Its internal pressure decreases and the air from outside rashes into lungs. This is called inspiration.