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

Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because:
A There is a positive intrapleural pressure
B Pressure in the lungs is higher than the atmospheric pressure.
C There is a negative pressure in the lungs.
D There is a negative intrapleural pressure pulling at the lung walls

Breathing and Exchange of Gases in past papers

45 questions from this chapter have appeared across 16 exam years.

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Practise Breathing and Exchange of Gases All 45 questions This chapter in 2016 Phase II