Q. Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because
A) there is a negative pressure in the lungs
B) there is negative intrapleural pressure pulling at the lung walls
C) there is a positive intrapleural pressure
D) pressure in the lungs is higher than the atmospheric pressure
Explanation
[Solution] Negative intrapleural pressure keeps the lungs expanded. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.