Calcium channel blockers are frequently used to
A) increase the heart rate.
B) treat tachycardia or other arrhythmias.
C) speed up conduction of impulses through the AV node.
D) slow the closing of K+ channels.
E) treat bradycardia and low blood pressure.
Correct Answer:
Verified
Q44: The plateau phase seen during the action
Q45: Which of the following heart chambers is
Q46: Action potentials pass from one cardiac muscle
Q47: Ventricular contraction begins at the
A) AV bundle.
B)
Q48: The "pacemaker" of the heart is the
A)
Q50: The cardiac electrical impulse normally begins spontaneously
Q51: If the SA node is nonfunctional, which
Q52: The action potentials are slowed at the
Q53: Which of the following events occurs first?
A)
Q54: Cardiac muscle cells
A) have smooth ER but
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