Uberon definition : The part of the cardiovascular system consisting of all venous vessels. In vertebrates
with a double circulation, this can be divided into systemic and pulmonary portions.;
Uberon synonym : vein system;
Uberon Homology note : The appearance of Chordata and subsequently the vertebrates is accompanied by a rapid
structural diversification of this primitive linear heart: looping, unidirectional
circulation, an enclosed vasculature, and the conduction system.[well established][VHOG];
The part of the cardiovascular system consisting of all venous vessels. In vertebrates
with a double circulation, this can be divided into systemic and pulmonary portions.