The development of the heart begins at around 3 weeks gestation. Cephalad splanchnic mesoderm is induced by deeper endoderm to form angioblast cells. The angioblasts cluster and fuse in a semi-circle around the neural plate. The anterior cells of this group form primitive blood vessels that eventually will form the heart - this is the cardiogenic area. Within the submenu, the subsequent stages of development are summarized:
Also within the submenu, the development of the following are considered:
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