A myogenic muscular circulatory organ found in the vertebrate cardiovascular system composed of chambers of cardiac muscle. It is the primary circulatory organ. [ http://orcid.org/0000-0002-6601-2165 http://en.wikipedia.org/wiki/Heart ]

Synonyms: vertebrate heart chambered heart

This is just here as a test because I lose it

Term information

database cross reference

uberon_slim, efo_slim, pheno_slim, vertebrate_core, organ_slim, major_organ

taxonomic disambiguation
branchial heart

axiom lost from external ontology

relationship type change: differentiates_from lateral plate mesoderm (AAO:0010574) CHANGED TO: develops_from lateral plate mesoderm (UBERON:0003081)[AAO]


Taxon notes:" the ascidian tube-like heart lacks chambers....The ascidian heart is formed after metamorphosis as a simple tube-like structure with a single-layered myoepithelium that is continuous with a single-layered pericar- dial wall. It lacks chambers and endocardium.... The innovation of the chambered heart was a key event in vertebrate evolution, because the chambered heart generates one-way blood flow with high pressure, a critical requirement for the efficient blood supply of large-body vertebrates... all extant vertebrates have hearts with two or more chambers (Moorman and Christoffels 2003)" DOI:10.1101/gad.1485706

external definition

Blood pumping organ composed of four chambers: sinus venosus, atrium, cardiac ventricle and bulbus arteriosus.[TAO]
Part of the circulatory system responsible for pumping blood; composed of three chambers--two atria and one ventricle.[AAO]

has narrow synonym

branchial heart

has related synonym


homology notes

As noted, the hearts of birds and mammals have four chambers that arises from the two chambers (atrium and ventricle) of the fish heart.[well established][VHOG]