Mechanism of breathing – intrapleural pressure

2016 Phase II 1 question

1. 1 Breathing and Exchange of Gases
   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
   Check Answer