Question

Which describes the role of the diaphragm during inhalation?

A. The diaphragm flattens, making the chest cavity smaller, and air is sucked in.

B. The diaphragm moves upward, making the chest cavity smaller, and air is pushed out.

C. The diaphragm flattens, making the chest cavity larger, and air flows in.

D. The diaphragm moves upward, making the chest cavity larger, and air flows in.

Answer 1

I believe that the answer is C.

Answer 2

The answer is C because when you inhale, the diaphragm contracts flattening itself making space in the chest cavity causing the chest to expand and the lungs to increase in size.