Discussion
1. A set of ________contractions while the ventricular walls relax, followed by ______________contractions while the atrial walls relax, constituents a__________.

Atrial; ventricular; cardiac cycle

2. The regulation and coordination of the cardiac cycle involves the ________________________.

Cardiac conduction system

3. An electrocardiograph____________________________.

Is a device used to detect electrical changes

4. Listening from the second intercostal space on either side of the sternum makes it possible to _____________________.

Hear sounds associated with the aortic and pulmonary valves.

5. List the places most targeted to hear sounds associated with aortic and pulmonary valves.