Intercalated Disks _______

question 34

Multiple Choice

Intercalated disks _______.

• A) are specialized muscle fibers that conduct the impulse directly to the AV node
• B) are tight junctions between cardiac muscle fibers that allow an impulse to pass rapidly from one fiber to the next
• C) are the terminal fibers in the heart's conduction system
• D) initiate the cardiac cycle

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