True statement regarding purkinje fibres:September 2009, March 2013
Ans. C: Have conduction velocity of four times than that of the hea muscleConduction rate is 4 m/s in purkinje fibers whereas it is 1 m/s in ventricular muscles, atrial pathways and Bundle of His. SA Node and AV Node has a conduction speed of 0.05 m/s
Are myelinated fibres
Have action potential about a tenth as long as those in the hea muscle
Have conduction velocity of four times than that of the hea muscle
All of the above