inhaling
air pressure in the atmosphere is higher than in the lungs (air flows into the lungs0
dome-shaped muscle sheet that sits underneath the lungs
the pressure of a gas in a closed container is inversely proportional to the volume of the container
air pressure in the lungs is higher than in the atmosphere (air flows out of the lungs)
exhaling
intercostal muscles
muscle groups that are situated in between the ribs that create and move the chest wall
diaphragm muscles
Boyle's Law
