2313

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Author:
holy
ID:
176025
Filename:
2313
Updated:
2012-10-07 13:04:52
Tags:
4I2
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4I2
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  1. All of the following may affect cardiac performance except:
    a. preload
    b. afterload
    c. contractility
    d. blood velocity
    d
  2. The amount of ventricular diastolic filling is called:
    a. preload
    b. afterload
    c. contractility
    d. heart rate
    a
  3. The amount of preload may be measured clinically by:
    a. atrial diastole
    b. ventricular end-diastolic pressure
    c. arterial end-systolic volume
    d. measuring myocardial cell length
    b
  4. According to the Frank-Starling law, an increase in preload
    may have which effect on cardiac performance?
    a. increase
    b. no change
    c. decreased
    d. cannot be determined
    a
  5. The resistance a ventricle encounters during ventricular
    systole is called:
    a. preload
    b. afterload
    c. contractility
    d. heart rate
    b
  6. What effect will an increase in afterload have on cardiac
    performance?
    a. increase
    b. no change
    c. decrease
    d. cannot be determined
    c
  7. All of the following will increase afterload except:
    a. semilunar valve stenosis
    b. anemia
    c. pulmonary hypertension
    d. systemic hypertension
    b
  8. The inherent property of the ventricle to contract is called:
    a. preload
    b. afterload
    c. contractility
    d. heart rate
    c
  9. Which of the following will directly affect myocardial
    contractility?
    a. mitral stenosis
    b. myocardial infarction
    c. cor triatriatum
    d. tricuspid stenosis
    b
  10. According to the Frank-Starling law of the heart, a decrease
    in heart rate may have which effect on cardiac performance?
    a. increase
    b. no change
    c. decrease
    d. cannot be predicted
    a
  11. Which of the following will enhance cardiac cell excitability, pacemaker firing rate, conduction speed and contractility?
    a. parasympathetic nervous system
    b. sympathetic nervous system
    c. autonomic nervous system
    d. preload
    b
  12. Which of the following will decrease cardiac cell excitability, pacemaker firing rate, conduction  speed and contractility?
    a. parasymapthetic nervous system
    b. sympathetic nervous system
    c. autonomic nervous system
    d. afterload
    a
  13. The term bathomotropic refers to:
    a. excitability
    b. pacemaker firing rate
    c. rate of conduction
    d. contractility
    a
  14. The term chronotropic refers to:
    a. excitability
    b. pacemaker firing rate
    c. rate of conduction
    d. contractility
    b
  15. The term dromotropic refers to:
    a. excitability
    b. pacemaker firing rate
    c. rate of conduction
    d. contractility
    c
  16. The term inotropic refers to:
    a. excitability
    b. pacemaker firing rate
    c. rate of conduction
    d. contractility
    d

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