Question

question 12
how does the diaphragm assist with breathing?
it contracts during exhalation to push air out
it relaxes during inhalation to create a vacuum in the lungs
it contracts to expand the chest cavity during inhalation
it compresses the lungs during inhalation
it regulates oxygen levels in the blood
0.31 pts

Explanation:

During exhalation, the diaphragm contracts. This contraction reduces the volume of the thoracic cavity, increasing the pressure inside the lungs relative to the outside. As a result, air is pushed out of the lungs.

Answer:

It contracts during exhalation to push air out.