Term: presumptive sinus venosus cardiac muscle cell
Name: presumptive sinus venosus
Synonyms:
Definition: Portion of tissue that is part of the heart tube and will become the sinus venosus.
Ontology: Anatomy Ontology [ZFA:0001722]

Name: cardiac muscle cell
Synonyms: cardiac muscle cells, cardiac myocyte, cardiomyocyte
Definition:
Ontology: Anatomy Ontology [ZFA:0009316]