Multiple Choice
The normal pacemaker of the heart is the _____ node, which is found in the _____ atrium, and has an intrinsic firing rate of _____ beats/min.
A) sinoatrial; left; 40 to 60
B) sinoatrial; right; 60 to 100
C) atrioventricular; left; 20 to 40
D) atrioventricular; right; 100 to 180
Correct Answer:
Verified
Correct Answer:
Verified
Q48: Complete the following chart:<br> <span
Q49: Match each item to the correct description
Q50: Is depolarization the same as contraction? Explain
Q51: The absolute refractory period begins with the
Q52: Match each item to the correct description
Q54: A conduction problem above the level of
Q55: The intrinsic rate of the Purkinje fibers
Q56: On the ECG, the P wave represents
Q57: _ cells are working cells of the
Q58: In the heart's conduction system, the _