True statement regarding purkinje fibres: September 2009, March 2013
Ans. C: Have conduction velocity of four times than that of the hea muscle Conduction 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
Have conduction velocity of four times than that of the hea muscle