Midsagittal view of the 10-somite embryo showing the relations of the neural tube, notochord, gut and pericardial sac.
Keywords: allantois, bulbis cordis, caudal intestinal portal, caudal neuropore, cephalic flexure, cephalic intestinal portal, cephalic neuropore, cloaca, cloacal membrane, common umbilical artery, cut edge of amnion, cut edge of umbilical vesicle, epimyocardial space, foregut, hindgut, isthmus, mesencephalic (cephalic) flexure, mesencephalon, mesocardium, midgut, myocardium, neural canal, neural tube, notochord, optic groove, oropharyngeal membrane, pericardial cavity, pericardial sac, pharyngeal pouch 1, primitive node, primitive streak, primitive ventricle of heart, prosencephalon (forebrain), rhombencephalon (hindbrain), septum transversum, thyroid diverticulum
Source: Atlas of Human Embryos.