The Main Pacemaker Region of the Heart Is

question 15

Multiple Choice

The main pacemaker region of the heart is

• A)electrically active nodal tissue located in the wall of the left ventricle.
• B)in the interventricular septum.
• C)able to cause the atria and ventricles to contract simultaneously.
• D)able to cause the muscle to begin to contract at the apex.
• E)in the wall of the right atrium.

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