4 And air flows in through the inflating the lungs 3 As a

Last updated: 10/11/2023

4 And air flows in through the inflating the lungs 3 As a result the air pressure in the chest cavity 2 This the size of the chest cavity like pulling the plunger back on a hypodermic needle 1 A healthy person inhales by lowering the and expanding the chest walls outward 4 As air fills the the lung will 1 Mr B tries to inhale 3 and air still enters hi lungs but now it leaks in through the puncture in the 2 He can still move his chest wall and