Body Fluids and CirculationNodal tissue - SA node 1 2019 Odisha Easy All the components of the nodal tissue are autoexcitable. Why does the SA node act as the normal pacemaker? A SA node has the lowest rate of depolarisation. B SA node is the only component to generate the threshold potential. C Only SA node can convey the action potential to the other components. D SA node has the highest rate of depolarisation. Check Answer
