MDCAT Biology MCQ #2098

What is the primary function of the sinoatrial (SA) node in the heart?

MDCAT Biology MCQ #2098

  1. Question 1

    Q1. What is the primary function of the sinoatrial (SA) node in the heart?

    • A) To conduct impulses to the ventricles
    • B) To initiate heartbeats
    • C) To regulate blood pressure
    • D) To filter blood

    Answer: To initiate heartbeats

    Explanation: The SA node acts as the heart's natural pacemaker, initiating heartbeats. The AV node conducts impulses to ventricles.