In both inspiration and expiration,air moves down a pressure gradient.

Question

Quizplus · Accepted Answer

Air moves from an area of high pressure to an area of low pressure, which creates a pressure gradient. During inspiration, the pressure within the lungs decreases, creating a gradient that allows air to flow into the lungs. During expiration, the pressure within the lungs increases, creating a gradient that allows air to flow out of the lungs. Therefore, air moves down a pressure gradient during both inspiration and expiration.

In Both Inspiration and Expiration,air Moves Down a Pressure Gradient