MDCAT Biology MCQ #2152

Which part of the cardiac conduction system is responsible for the delay between atrial and ventricular contraction?

MDCAT Biology MCQ #2152

  1. Question 1

    Q1. Which part of the cardiac conduction system is responsible for the delay between atrial and ventricular contraction?

    • A) SA node
    • B) AV node
    • C) Bundle of His
    • D) Purkinje fibers

    Answer: AV node

    Explanation: AV node delays impulse to allow atrial contraction before ventricular contraction.