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All of the following may affect cardiac performance except:
A. preload
B. contractility
C. afterload
D. blood velocity
D.
The amount of ventricular diastolic filling is called:
A. heart rate
B. afterload
C. contractility
D. preload
D.
The amount of preload may be measured clinically by:
A. ventricular end-diastolic pressure
B. measuring myocardial cell length
C. arterial end-systolic volume
D. atrial diastole
A.
According to the Frank-Starling law, an increase in preload
may have which effect on cardiac performance?
A. increase
B. decreased
C. cannot be determined
D. no change
A.
The resistance a ventricle encounters during ventricular
systole is called:
A. afterload
B. contractility
C. preload
D. heart rate
A.
What effect will an increase in afterload have on cardiac
performance?
A. increase
B. decrease
C. cannot be determined
D. no change
B.
All of the following will increase afterload except:
A. systemic hypertension
B. pulmonary hypertension
C. semilunar valve stenosis
D. anemia
D.
The inherent property of the ventricle to contract is called:
A. contractility
B. preload
C. afterload
D. heart rate
A.
Which of the following will directly affect myocardial
contractility?
A. tricuspid stenosis
B. cor triatriatum
C. mitral stenosis
D. myocardial infarction
D.
According to the Frank-Starling law of the heart, a decrease
in heart rate may have which effect on cardiac performance?
A. cannot be predicted
B. increase
C. decrease
D. no change
B.
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. preload
D. autonomic nervous system
B.
Which of the following will decrease cardiac cell excitability, pacemaker firing rate, conduction speed and contractility?
A. sympathetic nervous system
B. autonomic nervous system
C. afterload
D. parasymapthetic nervous system
D.
The term bathomotropic refers to:
A. pacemaker firing rate
B. contractility
C. rate of conduction
D. excitability
D.
The term chronotropic refers to:
A. excitability
B. rate of conduction
C. pacemaker firing rate
D. contractility
C.
The term dromotropic refers to:
A. pacemaker firing rate
B. contractility
C. rate of conduction
D. excitability
C.
The term inotropic refers to:
A. pacemaker firing rate
B. excitability
C. rate of conduction
D. contractility
D.
Author
holy
ID
176025
Card Set
2313
Description
4I2
Updated
2012-10-07T17:04:52Z
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