Question

why in purkinje fibers impulses transmission is rapid

Answer 1

Rapid Transmission in the Ventricular Purkinje System. Special Purkinje fibers lead from the A-V node through the A-V bundle into the ventricles. ... ThePurkinje fibers also have very few myofibrils, which means that they contract little or not at all during the course of impulse transmission

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Answer 2

In Purkinje fibers impulses transmission is rapid because it is composed of high amount of glycogen and have gaps between them.

Explanation:

A Purkinje fiber refers to the type of cardiac muscles which are modified to perform certain special function. They are thicker cells and contain few myofibrils.

It is located as a elongation from the atrioventricular node, and moves through the fibrous body by dividing into two bundles namely right bundle and left bundle and moves to the bottom of Endocardium towards the heart’s apex. Due to such structural arrangement, it is involved in rapid transmissions of the pulses.