NEET 2016 Biology Paper 2

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Question : 77 of 90

Marks: +1, -0

Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because

[NEET 2016 P2]

pressure in the lungs is higher than the atmospheric pressure
there is a negative pressure in the lungs
there is a negative intrapleural pressure pulling at the lung walls
there is a positive intrapleural pressure

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