The AV node is important because it
A) directs electrical impulses from the ventricles to the atria.
B) delays the transmission of the electrical impulses to the ventricles in order for the atria to finish contracting.
C) serves as the pacemaker in a normal heart.
D) electrically opens the AV valves.
E) None of these answers are correct.
Correct Answer:
Verified
Q26: Autorhythmic cells
A) are also called pacemakers because
Q27: The end of the plateau phase is
Q28: ECGs
A) provide direct information about the heart
Q29: The importance of the plateau phase of
Q30: When the heart is in fibrillation,
A) the
Q32: The fibrous skeleton of the heart is
Q33: Myocardial cells can generate action potentials spontaneously
Q34: In the condition known as complete heart
Q35: If channels are permeable to
A) Na⁺ only.
B)
Q36: The action potentials of myocardial autorhythmic cells,
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