Ventilation

Ventilation is the process in which the lungs are __________.

	Inhalation	Exhalation
Ribs	Move out and up	Move down and in
Diaphragm	Contracts and Sinks	Relaxes Rises
	This increases the size of the thorax, __________ the pressure, making air rush into the lungs to fill the gap	This decreases the size of the thorax, __________ the pressure, squeezing the air out of the lungs