Question

Which of the following actions increases the volume of your lungs?

d. Gases move from areas of lower pressure.

c. Air pressure increases inside the lungs.

a. The diaphragm flattens and moves downward.

b. The rib cage becomes smaller.

Answer 1

B

Step-by-step explanation:

During the process of inhalation, the lung volume expands as a result of the contraction of the diaphragm and intercostal muscles (the muscles that are connected to the rib cage), thus expanding the thoracic cavity. Due to this increase in volume, the pressure is decreased, based on the principles of Boyle's Law