What is the condition in which the heart impulses are too slow to maintain circulation?
A) heart block
B) arrhythmia
C) ectopic pacemaker
D) incompetent valve
Correct Answer:
Verified
Q22: The pathway from the lungs,through the left
Q23: An area other than the SA node
Q25: A heart rate below 60 beats per
Q26: The pathway from the superior and inferior
Q30: The aortic semilunar valve prevents blood from
Q31: In an ECG,the QRS complex represents
A)depolarization of
Q32: The first heart sound,"lub," is made by
A)closure
Q34: How is the heart muscle nourished?
A)by blood
Q35: The sound of a heart murmur is
Q39: The second heart sound,"dup," is caused by
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