2313 Exam 2

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Author:
Nelikya
ID:
173653
Filename:
2313 Exam 2
Updated:
2012-09-26 16:18:15
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Reynolds
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Description:
Section 4A
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  1. 1. All of the following are components of the cardiac conduction system except:
    c: interatrial septum
  2. 2. Which coronoary artery supplies oxygenated blood to the sinoatrial node and the atrioventricular node?
    D: right coronary artery
  3. 3. Which of the following components of the cardiac conductions system is considered the pacemaker of the heart?
    A: sinoatrial node
  4. 4. The sinoatrial node is located closest to the:
    a: superior vena cava
  5. 5. The sinoatrial node normally fires electrical impulses at a rate of:
    a: 60 to 100 per minute
  6. 6. The bundle has an automatic firing rate of between:
    b: 40 to 60 times per minute
  7. 7. The pirkinje fibers have an automatic firing rate between:
    b: 20 to 40 per minute
  8. 8. Which of the following components of the cardiac conduction system delivers the electrical impulse from the sinoatrial node to the atria?
    A: internodal tracts
  9. 9. Which of the following deliver the electrical impulse from the sinoatrial node to the left atrium?
    A: Bachmann's
  10. 10. Which of the following components of the cardiac conduction system deliever the electrical impulse to the bundle of His after a 0.10 second delay?
    C: atrioventricular node
  11. 11. The atrioventricular node is located at the floor of the:
    b: right atrium
  12. 12. Which of the following componenets of the cardiac conduction system deliver the elctrical impulse from the atrioventricular node to the bundle branches?
    C: bundle of His
  13. 13. Which of the following components of the cardiac conduction system delivers the electrical impulse from the bundle of His to the ventricles?
    D: internodal tracts
  14. 14. Which of the following components of the cardiac conduction system delivers the electrical impulse from the bundle branches to the ventricular walls?
    D: Purkinje fibers
  15. 15. Which of the following terms means the heart can begin and maintain rhythmic activity without the aid of the nervous system?
    A: automaticity
  16. 16. Which of the following terms means that cardiac muscle can accept and respond to electrical impulses:
    b: excitability
  17. 17. Which of the following terms means that a cardiac cell is able to transfer an electrical impuses to a neighboring cardiac cell?
    C: conductivity
  18. 18. which of the following terms means that the heart responds to an electrical impulse by contracting?
    D: contractability

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