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Cardiac Anatomy & Physiology Flashcards

7 cards from real CVT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Cardiac Anatomy & Physiology flashcards as text

  1. The right coronary artery most commonly supplies which structure responsible for the AV node?

    Answer: Right coronary artery

    The AV node is supplied by the AV nodal artery, which arises from the right coronary artery in ~90% of individuals.

  2. Which valve prevents backflow of blood from the aorta into the left ventricle?

    Answer: Aortic valve

    The aortic valve closes during diastole to prevent regurgitation of blood from the aorta back into the left ventricle.

  3. Cardiac output is defined as which of the following?

    Answer: Stroke volume × heart rate

    Cardiac output = stroke volume × heart rate, representing the volume of blood the heart pumps per minute.

  4. The interventricular septum is anatomically and functionally part of which ventricle?

    Answer: Left ventricle

    The interventricular septum is developmentally and functionally considered part of the left ventricle.

  5. Which of the following best describes preload?

    Answer: Degree of myocardial stretch at end-diastole

    Preload refers to the ventricular wall stress (stretch) at end-diastole, often approximated by end-diastolic volume or pressure.

  6. In the cardiac conduction system, the bundle branches divide from which structure?

    Answer: Bundle of His

    The bundle of His (atrioventricular bundle) divides into right and left bundle branches as it reaches the interventricular septum.

  7. What is the normal resting cardiac output for an average adult?

    Answer: 4–6 L/min

    Normal resting cardiac output is approximately 4–6 L/min, typically around 5 L/min.