Question

what does a group of specialised cardiac muscles in the wall of right atrium that initiates heartbeat called??​

Answer 1

Answer:

Coronary muscles

Cardiac muscles

Answer 2

Explanation:

Purkinje fibers/ventricular myocardium: QRS complex. The two bundle branches taper out to produce numerous Purkinje fibers, which stimulate individual groups of myocardial cells to contract.

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