Heart walls of the heart to valves by cartilaginous connections called chordae tendinae. These muscles prevent the valves from falling too far back when they close. During the relaxation phase of the cardiac cycle, the papillary muscles are also relaxed and the tension on the chordae tendineae is slight. As the heart chambers contract, so do the papillary muscles. This creates tension on the chordae tendineae, helping to hold the cusps of the atrioventricular valves in place and preventing them from being blown back into the atria. Two additional semilunar valves sit at the exit of each of the ventricles. The
Map of the Human Heart gondola but actually on top of the blimp), the other is the final scene of the film which has a twist ending. "Map of the Human Heart" was critically reviewed and found favourable mention from many film critics. Roger Ebert noted: ""Map of the Human Heart" tells a soaring story of human adventure - adventure of the best kind, based not on violence, but on an amazing personal journey. It is incredible sometimes what distances can be traveled in a single human life, and this is a movie about a man who could not have imagined his end in his