Protein signalling in heart development Protein signalling in heart development The heart is the first functional organ in a vertebrate embryo. There are 5 stages to heart development. Specification of cardiac precursor cells: The lateral plate mesoderm delaminates to form two layers: the dorsal somatic (parietal) mesoderm and the ventral splanchnic (visceral) mesoderm. The heart precursor cells come from the two regions of the splanchnic mesoderm called the cardiogenic mesoderm. These cells can differentiate into endocardium which lines the heart chamber and valves and the myocardium which forms the musculature of the ventricles and the atria. The heart cells are specified in anterior mesoderm by
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