Which of the Following Statements About the Coordination of the Heartbeat

question 35

Multiple Choice

Which of the following statements about the coordination of the heartbeat is FALSE?

• A)Each heartbeat is generated by signals from the nervous system that stimulate the heart's pacemaker cells.
• B)Cardiac muscles are in electrical continuity, which allows for synchronous contraction of the two atria followed by synchronous contraction of the two ventricles.
• C)Under normal conditions, the electrical separation between the atria and ventricles prevents all four chambers from contracting synchronously.
• D)Following activation of the AV node, the action potential is transmitted to the base of the ventricles by a modified set of cardiac muscle fibers.
• E)None of the answer options is false.

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Definitions:

Boston

A historic city in Massachusetts, United States, one of the oldest cities in the country, and site of several key events during the American Revolution, such as the Boston Tea Party and the Battle of Bunker Hill.

American Revolution

The period of political and military conflict (1775-1783) between the Thirteen Colonies and the British Empire, leading to the independence of the United States.

Instigating

The act of provoking or initiating an event, action, or situation, often with the intention of causing something specific to happen.

Part

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