Which Represents the Correct Order in Which Action Potentials Spread

question 20

Multiple Choice

Which represents the correct order in which action potentials spread from the atria to the ventricles during a normal heartbeat in the mammalian heart?

• A) Atrioventricular node  bundle of His  Purkinje fibers
• B) Atrioventricular node  Purkinje fibers  bundle of His
• C) Purkinje fibers  bundle of His  atrioventricular node
• D) Sinoatrial node  Purkinje fibers  bundle of His
• E) Sinoatrial node  ventricular muscle cells  Purkinje fibers

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