Question

when we breathe out why does the air pressure not collapse

Answer 1

trachea is made up of C-shaped cartilaginous rings that prevents the air passage from collapsing during exhalation.

Answer 2

This allows air to pass in and out of the lungs. As the trachea is made of cartilaginous rings which are of C shape, it prevents the air passage not to collapse when we breathe out air. Due to the presence of rings of cartilage, the air passage do not collapse when we breath out .