Question

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 a 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

Answer 1

Answer: (B)

there is a negative intrapleural pressure pulling at the lung walls

Answer 2

Lungs do not collapse between breathes some air always remains in the lungs which can never be expelled because there is negative intrapleural pressure pulling at the lung wall.