Rahul told in seminar that breathing take place based on the pressure gradient What will happen if the intra - Biology - Breathing and Exchange of Gases

Question

Rahul told in seminar that breathing take place based on the
pressure gradient What will happen if the intra pulmonary pressure
so bigher than the atmospheric pressure?

Alisha Guglani · Accepted Answer

Dear student
Expiration will occur when intra pulmonary pressure is higher than
atmospheric pressure Air moves out of the lungs when the pressure
inside the lungs is greater than the pressure in the atmosphere
Intra pulmonary pressure is defined as the pressure that occurs
within lungs A pressure gradient between the lungs and the
atmosphere is created when there is movement of air into and out of
the lungs Inspiration occurs when the pressure within the lungs
(intra-pulmonary pressure) is less than the atmospheric pressure, i
e , there is a negative pressure in the lungs with respect to
atmospheric pressure Thus there is contraction of the diaphragm
which increases the volume of the thoracic chamber The overall
increase in the thoracic volume causes a similar increase in
pulmonary volume An increase in pulmonary volume decreases the
intrapulmonary pressure, which becomes less than the atmospheric
pressure which forces the air from outside to move into the
lungs
During expiration, there is decrease in pulmonary volume which
increases the intrapulmonary pressure, which becomes higher than
the atmospheric pressure and thus forces air from inside of lungs
to move out
Regards

Rahul told in seminar that breathing take place based on the pressure gradient. What will happen if the intra pulmonary pressure so bigher than the atmospheric pressure?