a transient fetal dilation of the distal (or cranial) heart tube located where the arterial trunk joins the ventral roots of the aortic arches [ MP:0010568 https://www.worldcat.org/search?q=bn%3A0-683-40008-8 ]

Synonyms: primitive right ventricle endocardium

This is just here as a test because I lose it

Term information


pheno_slim, vertebrate_core

depicted by


editor note

TODO - check relationship to bulbus arteriosus

external definition

A pear shaped chamber that functions as a capacitor, maintaining continuous blood flow into the gill arches. The bulbus arteriosus has three distinct layers. Hu et al. 2000.[TAO]