GENERAL HISTOLOGY

Detailed explanation-1: -They send electrical signals very quickly to your right and left heart ventricles. Your Purkinje fibers are in the subendocardial surface of your ventricle walls. The subendocardial surface is part of the endocardium, the inner layer of tissue that lines your heart’s chambers.

Detailed explanation-2: -The final hand-off occurs at the base of the ventricles, where the electrical impulse is sent through thin Purkinje fibers on both sides of the heart.

Detailed explanation-3: -Purkinje fibres are located in the heart’s ventricular walls, below the endocardium, in a space called the subendocardium. It is made of fibres that are capable of transmitting electrical impulses.

Detailed explanation-4: -The Purkinje fibers, relay the electrical impulse directly to ventricular muscle, stimulating the ventricles to contract (ventricular systole). Repolarization of the SA node is also spread throughout the atria, and then the ventricles, starting the relaxation phase (ventricular diastole).