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Wikimedia Commons has media related to Embryology of cardiovascular system.

Tubular heart	Truncus arteriosus Bulbus cordis Primitive ventricle Primitive atrium Sinus venosus
Chamber formation	Atrioventricular Primary interventricular foramen Endocardial cushions Septum intermedium Atrioventricular canal Atrial Septum primum Foramen secundum Primary interatrial foramen Septum secundum Foramen ovale
Other	Aorticopulmonary septum Protein signalling in heart development

Vessels

Arteries	Dorsal aorta Aortic arches Aortic sac
Veins	Anterior cardinal vein Posterior cardinal vein Common cardinal veins
Lymph vessels	Lymph sacs
Other	Vascular remodelling in the embryo

Embryology of cardiovascular system