What is the function of the cords that attach to the valves?

The cords that attach to the heart valves are called chordae tendineae. Their primary function is to anchor the valves to the heart's ventricles, ensuring that the valves open and close properly during the cardiac cycle. They prevent the valves from inverting or prolapsing into the atria when the ventricles contract, thereby maintaining proper blood flow and preventing backflow.