2.45: Understand the Role of the Intercostal Muscles and the Diaphragm in Ventilation

INHALATION	EXHALATION
Organs during Inhalation	Organs during Exhalation
Intercostal Muscles will Contract, Pulling Ribcage Up and Out Diaphragm will Contract, Pulling Downwards Volume Increases, Pressure Decreases Air is Drawn In	Intercostal Muscles will Relax, Pushing Ribcage Down and In Diaphragm will Relax, Pushing Upwards Volume decreases, Pressure Increases Air is Pushed Out