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Cardiac Anatomy and Physiology Flashcards

7 cards from real CMT 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 and Physiology flashcards as text

  1. Which layer of the heart wall contains the cardiac muscle cells responsible for contraction?

    Answer: Myocardium

    The myocardium is the thick middle layer of the heart wall composed of cardiac muscle cells that generate the force of contraction.

  2. The mitral valve is located between which two cardiac chambers?

    Answer: Left atrium and left ventricle

    The mitral (bicuspid) valve is the atrioventricular valve on the left side of the heart, separating the left atrium from the left ventricle.

  3. What is the primary function of the chordae tendineae?

    Answer: Prevent AV valve leaflets from prolapsing into the atria

    Chordae tendineae are fibrous cords that anchor the AV valve leaflets to papillary muscles, preventing them from inverting into the atria during ventricular contraction.

  4. Which coronary artery supplies the lateral wall of the left ventricle?

    Answer: Left circumflex artery

    The left circumflex artery branches from the left main coronary artery and supplies the lateral and posterior walls of the left ventricle.

  5. During diastole, which event occurs in the cardiac cycle?

    Answer: Ventricular relaxation and filling with blood

    Diastole is the phase of cardiac relaxation during which the ventricles refill with blood from the atria through open AV valves.

  6. The right coronary artery most commonly supplies which of the following structures?

    Answer: Sinoatrial node and AV node

    The right coronary artery supplies the SA node in about 60% of people and the AV node in about 85-90% of people, making it critical to cardiac conduction.

  7. What does the term 'cardiac output' refer to?

    Answer: The total volume of blood pumped per minute

    Cardiac output is the total volume of blood the heart pumps per minute, calculated as heart rate multiplied by stroke volume (normal ~5 L/min at rest).