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if the impulse is coming inferiorly from the SA node then how do the ventricles contract inferior to superior?

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if the impulse is coming inferiorly from the SA node then how do the ventricles contract inferior to superior?

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Sino atrial (SA) node is a pacemaker in the heart responsible for generation of action potential.  It contains a collection of myocytes separated by connective tissue in the upper atrial wall. The initiator myocyte may produce an action potential faster which leads to faster heart rate. This phenomenon i

Sino atrial (SA) node is a pacemaker in the heart responsible for generation of action potential.  It contains a collection of myocytes separated by connective tissue in the upper atrial wall. The initiator myocyte may produce an action potential faster which leads to faster heart rate. This phenomenon is known as superior shift.  If the initiator myocyte produces an action potenti

Sino atrial (SA) node is a pacemaker in the heart responsible for generation of action potential.  It contains a collection of myo...

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