Anatomical system that has as its parts the heart and blood vessels.
Comment:
[homology-note] "The vessels of the cardiovascular system are as varied as the diverse organs they supply. However, these variations are based on modifications of a fundamental plan of organization common to vertebrates.[well established][VHOG]" xsd:string {date_retrieved="2012-09-17", external_class="VHOG:0000302", ontology="VHOG", source="ISBN:978-0072528305 Kardong KV, Vertebrates: Comparative Anatomy, Function, Evolution (2006) p.451", source="http://bgee.unil.ch/"}