For Inspiration to Occur,the Interior of the Chest Cavity Must

Question

For inspiration to occur,the interior of the chest cavity must be below atmospheric pressure.

Accepted Answer

Inspiration, or inhaling air into the lungs, requires a decrease in pressure within the chest cavity. This decrease in pressure is created by the contraction of the diaphragm and intercostal muscles, which increases the volume of the chest cavity and allows air to flow into the lungs. This decrease in pressure makes the interior of the chest cavity below atmospheric pressure.