Multiple Choice
The AV node
A) is the normal pacemaker of the heart
B) is the only electrical connection between the atria and the ventricles
C) rapidly conducts the impulse from the atria to the ventricles so that they contract simultaneously
D) is not innervated by the vagus nerve
E) has the slowest rate of depolarization in the heart
Correct Answer:
Verified
Correct Answer:
Verified
Q124: The membrane potential of cardiac muscle cells
Q125: Complete each of the following statments.<br>A(n) _
Q126: Complete each of the following statments.<br>The refractory
Q128: Complete each of the following statements with
Q131: Semilunar valves<br>A) prevent backflow of blood from
Q214: The SA node is the only part
Q241: If the EDV were held constant, increased
Q255: Fibrillation is the<br>A)backflow of blood throughout the
Q267: The second heart sound is due to
Q288: Extrasystole of the heart means that it<br>A)beats