Describe the physiological consequences of decreasing the functional residual capacity (FRC) in an adult by 1 litre.
High scoring answers began with a definition and normal values, followed by a detailed list of the consequences of decreasing the FRC. Some candidates included descriptions of the normal function of FRC, conditions that decrease FRC and ways of improving reduced FRC. These were not required and did not attract marks. Diagrams require correctly labelled axes, values & units.