1. All of the following are components of the cardiac conduction system except:
B.
2. Which coronary artery supplies oxygenated blood to the sinoatrial node and the atrioventricular
node?
A.
3. Which of the following components of the cardiac conduction system is considered the
pacemaker of the heart?
D.
4. The sinoatrial node is located closest to the:
A.
5. The sinoatrial node normally fires electrical impulses at a rate of:
C.
6. The His bundle has an automatic firing rate of between:
D.
7. The Purkinje fibers have an automatic firing rate of between:
D.
8. Which of the follow ing components of the cardiac conduction system delivers the electrical
impulse from the sinoatrial node to the atria?
B.
9. Which of the following deliver the electrical impulse from the sinoatrial node to the left atrii
C.
10. Which of the following components of the cardiac conduction system deliver the electric
impulse to the bundle of His after a 0.10 second delay?
C.
11. The atrioventricular node is located at the floor of the:
B.
12. Which of the following components of the cardiac conduction system deliver the electrical
impulse from the atrioventricular node to the bundle branches?
B.
13. Which of the following components of the cardiac conduction system delivers the electrical
impulse from the bundle of His to the ventricles?
B.
14. Which of the following components of the cardiac conduction system delivers the electrical
impulse from the bundle branches to the ventricular walls?
D.
15. Which of the following terms means the heart can begin and maintain rhythmic activity without
the aid of the nervous system?
D.
16. Which of the following terms means that cardiac muscle can accept and respond to electrical
impulses?
A.
17. Which of the following terms means that a cardiac cell is able to transfer an electrical impulse
to a neighboring cardiac cell?
D.
18. Which of the following terms means that the heart responds to an electrical impulse by-
contracting?