Question

Air moves out of the lungs when the pressure inside the lungs is

• A. less than the pressure in the atmosphere
• B. greater than the pressure in the atmosphere.
• C. equal to the pressure in the atmosphere.
• D. greater than the intra-alveolar pressure

Answer 1

The correct option is B

greater than the pressure in the atmosphere.

Air moves out of the lungs when the pressure inside the lungs is greater than the pressure in the atmosphere. Air moves into the lungs (inspiration) when the pressure inside the lungs is less than the air pressure in the atmosphere