The nurse is helping a patient understand why the heart beat can change in speed.When doing so,what should the nurse explain as being the pacemaker of the heart?

Question

Quizplus · Accepted Answer

The sinoatrial (SA)node is a specialized mass of cardiac muscle that depolarizes rhythmically and most rapidly,about 100 times per minute,and therefore initiates each heartbeat.For this reason,the SA node is sometimes called the pacemaker of the heart.A.C.D.These structures are not considered the pacemaker of the heart.

The Nurse Is Helping a Patient Understand Why the Heart