A hollow, muscular organ, which, by contracting rhythmically, contributes to the circulation of lymph, blood or analogs. Examples: a chambered vertebrate heart; the tubular peristaltic heart of ascidians; the dorsal vessel of an insect; the lymoh heart of a reptile. [ http://orcid.org/0000-0002-6601-2165 ]
Synonyms: cardiac pump heart or heart like organ
This is just here as a test because I lose it