The rate of heart beat is determined by

Question

The rate of heart beat is determined by (A) SA node (B) AV node (C) Purkinje fibre (D) Papillary muscles

Tardigrade Admin · Accepted Answer

The rate of heart beat is determined by SA node or sinoatrial node of myogenic muscles. These muscle from two nodes and a network called cardiac conduction system. SA node is a site of rhythmic impulse so is also called as pacemaker.

Q. The rate of heart beat is determined by

SA node

AV node

Purkinje fibre

Papillary muscles

The rate of heart beat is determined by $S A$ node or sinoatrial node of myogenic muscles. These muscle from two nodes and a network called cardiac conduction system. $S A$ node is a site of rhythmic impulse so is also called as pacemaker.