Uberon definition : Either of two veins in the mammalian embryo and various adult lower vertebrate forms
located in the thoracic and abdominal regions dorsolateral to and on either side of
the descending aorta and giving rise to the azygos and hemiazygos veins and a part
of the inferior vena cava[MW]. These veins drain the body wall via the segmental intercostal
veins, thus taking over the function of the posterior cardinals[ISBN];
Either of two veins in the mammalian embryo and various adult lower vertebrate forms
located in the thoracic and abdominal regions dorsolateral to and on either side of
the descending aorta and giving rise to the azygos and hemiazygos veins and a part
of the inferior vena cava[MW]. These veins drain the body wall via the segmental intercostal
veins, thus taking over the function of the posterior cardinals[ISBN]