Term: heart tube ventral side
Name: heart tube
Synonyms:
Definition: Cavitated compound organ that will become the adult heart following looping morphogenesis and valve formation.
Ontology: Anatomy Ontology [ZFA:0000360]

Name: ventral side
Synonyms: ventral
Definition: An anatomical region that is the entire part of an anatomical structure ventral to a horizontal plane and bounded on one side by the same horizontal plane.
Ontology: Spatial Ontology [BSPO:0000068]