(a(i))[3]
Identify the labels P, Q and R. P ........................................ Q ........................................ R ........................................
(a(ii))[1]
State which type of homeostatic control mechanism is operating in Fig. 6.1.
(b)[7]
When blood glucose concentration falls below the set point, a hormone is secreted by the pancreas. Describe how the release of this hormone causes blood glucose concentration to return to the set point.