What happens to the diaphragm during inspiration?
A) It relaxes and raises.
B) It contracts and flattens.
C) It relaxes and flattens.
D) It contracts and raises.

Question

Quizplus · Accepted Answer

During inspiration, the diaphragm contracts and flattens, which increases the volume of the thoracic cavity and decreases the pressure inside the lungs. This allows air to flow into the lungs.

What Happens to the Diaphragm During Inspiration