<prompt> Slowest conduction of velosity occurs inAtrial muscleA.V. nodePurkinje fibreVentricular muscles  <response>: A.V. node 549 - Ganong 22nd 487-488-K.S 4th 492- Ganong 23rdThe velocity of impulse is maximum in purkinje fibres and minimum at AV nodeTissueConduction rate ms GanongK. Sembulingum S A node0.05Intemodal fibres - l.0ms Atrial pathway1Atrial muscle 0.3ms A V. node0.050.05 ms Bundle of His10.12 ms Purkinje system44 ms Ventricular muscle10.5 ms 