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Biology
Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because
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Q. Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because
NEET
NEET 2016
Breathing and Exchange of Gases
A
there is a negative pressure in the lungs
16%
B
there is a negative intrapleural pressure pulling at the lung walls
62%
C
there is a positive intrapleural pressure
8%
D
pressure in the lungs is higher than the atmospheric pressure
14%
Solution:
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.