An Artificial Pacemaker Can Be Implanted in Patients Whose Natural

Multiple Choice

An artificial pacemaker can be implanted in patients whose natural pacemaker is malfunctioning,causing an excessively slow or irregular heartbeat.In order for the artificial pacemaker to ensure proper cardiac rhythm,the electrical leads should be implanted

A) in the middle of the left ventricle.
B) in the brain.
C) in the middle of the aorta.
D) in the wall of the right atrium.
E) at the atrioventricular node.