Which of the Following Is True of the Structures of the Electrical

question 26

Multiple Choice

Which of the following is true of the structures of the electrical conduction system?

• A)The AV valve is the pacemaker.
• B)In normal sinus rhythm,the electrical signal arises within the SA node.
• C)The His-Purkinje system spreads the electrical system from the right atrium to the left atrium.
• D)The purpose of the AV node is to increase the speed at which the cardiac impulse moves from the atria to the ventricles.

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