Plate 1 from Davis, 1927 illustrates the development of the heart in embryo 3709. These figures were redrawn by DeVries and Saunders, 1962 using more contemporary terminology.
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Keywords: aortic bulb, endocardium, forebrain, heart, left atrioventricular sulcus, left atrium, left ventricle, myocardium, right aortic arch 1, right atrioventricular sulcus, right atrium, right ventricle
Source: The Virtual Human Embryo.