The movement of the chest during inhalation is the result of the inflated lungs pushing the chest wall outward.

Question

Quizplus · Accepted Answer

The movement of the chest during inhalation is primarily due to the diaphragm contracting and moving downward, and the intercostal muscles contracting to expand the rib cage, which decreases pressure in the chest cavity and allows air to flow into the lungs. The lungs themselves do not push the chest wall outward; they expand as air is drawn in due to the negative pressure created.

The Movement of the Chest During Inhalation Is the Result