A hollow, muscular organ, which, by contracting rhythmically, keeps up the circulation of the blood or analogs[GO,modified]. [ http://amigo.geneontology.org/amigo/term/GO:0007507 ]

This is just here as a test because I lose it

Term information




Gene notes: Bmp, Nkx, Gata

has narrow synonym

dorsal tube


has related synonym

adult heart



taxon notes

note we reserve the subclass 'heart' from the vertebrate multi-chambered heart. 'The first heart-like organ is believed to have appeared 500my ago in an ancestral bilaterian'. Amniotes: four-chambered heart. Amphibians: two atria, one ventricle, pulmonary; fish: single atrium and ventricle; amphioxus: tubular, non-striated, closed, unidirectional; ascidians: tubular, striated, open, bidirectional; arthropods: tubular, open; C elegans: contractile pharynx; Cnideria: striated muscle cells associated with gastrodermis

Term relations

Subclass of: