Impulse of heart beat originates from

Question

Impulse of heart beat originates from (A) SA node (B) AV node (C) vagus nerve (D) cardiac nerve

Tardigrade Admin · Accepted Answer

SA node (Sino Artial node) is a group of specialized cardiac muscle cells which have the property of generating rhythmic excitatory waves. It is also called pacemaker of the heart as it generates the wave for all the chambers of heart to contract.

Q. Impulse of heart beat originates from

SA node

AV node

vagus nerve

cardiac nerve

SA node (Sino Artial node) is a group of specialized cardiac muscle cells which have the property of generating rhythmic excitatory waves. It is also called pacemaker of the heart as it generates the wave for all the chambers of heart to contract.