Physiology General 2361540f

True statement regarding purkinje fibres:September 2009, March 2013

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

High-Yield Explanation

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

True statement regarding purkinje fibres:September 2009, March 2013

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