The chordae tendineae in the right and left ventricles connect what to the papillary muscles?

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Study for the EPU Electrophysiology Exam with comprehensive questions and explanations. Enhance your knowledge with flashcards and a variety of question formats to ensure you are prepared to excel!

Multiple Choice

The chordae tendineae in the right and left ventricles connect what to the papillary muscles?

Explanation:
Chordae tendineae tether the leaflets of the atrioventricular valves to the papillary muscles. This linkage keeps the valve cusps from inverting into the atria when the ventricles contract, ensuring proper one-way flow. The papillary muscles pull on the chordae during systole, increasing tension to hold the leaflets closed and prevent backflow. The aortic valve leaflets are part of the semilunar valves and don’t use chordae to papillary muscles, and the cords aren’t attached to myocardial fibers. So the connection is between the valve leaflets and the papillary muscles.

Chordae tendineae tether the leaflets of the atrioventricular valves to the papillary muscles. This linkage keeps the valve cusps from inverting into the atria when the ventricles contract, ensuring proper one-way flow. The papillary muscles pull on the chordae during systole, increasing tension to hold the leaflets closed and prevent backflow. The aortic valve leaflets are part of the semilunar valves and don’t use chordae to papillary muscles, and the cords aren’t attached to myocardial fibers. So the connection is between the valve leaflets and the papillary muscles.

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