The action potentials are slowed at the AV node to allow the
A) ventricles to repolarize.
B) ventricles to completely empty of blood.
C) pacemaker to reset for the next beat.
D) atria to complete their contraction.
E) atria to begin their contraction.
Correct Answer:
Verified
Q47: Ventricular contraction begins at the
A) AV bundle.
B)
Q48: The "pacemaker" of the heart is the
A)
Q49: Calcium channel blockers are frequently used to
A)
Q50: The cardiac electrical impulse normally begins spontaneously
Q51: If the SA node is nonfunctional, which
Q53: Which of the following events occurs first?
A)
Q54: Cardiac muscle cells
A) have smooth ER but
Q55: Which of the following sequences for the
Q56: Which of the following is a function
Q57: Depolarization of a cardiac muscle cell occurs
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