Depression at base of developing heart that contains a population of cardiomyocytes that migrate and contribute to the interventricular septum. [ http://www.ncbi.nlm.nih.gov/pubmed/17064678 http://orcid.org/0000-0002-6601-2165 https://orcid.org/0000-0003-3308-6245 ]
Synonyms: bulboventricular groove bulbo-ventricular sulcus ependymal groove ependymal sulcus