What is the chordae tindenae?

The chordae tendineae are fibrous cords in the heart that connect the papillary muscles to the atrioventricular (AV) valves, specifically the mitral and tricuspid valves. They play a crucial role in preventing the valves from inverting or prolapsing during ventricular contraction, ensuring proper blood flow and preventing backflow into the atria. By anchoring the valves, the chordae tendineae help maintain the structural integrity of the heart's chambers during the cardiac cycle.