Term: atrium lateral margin
Name: atrium
Synonyms:
Definition: Cavitated compound organ that receives inflow of deoxygenated blood and delivers it to a muscular cardiac ventricle. Valves are present to direct flow. There are only two chambers present in the fish heart.
Ontology: Anatomy Ontology [ZFA:0000471]

Name: lateral margin
Synonyms:
Definition: Anatomical margin that is located on the lateral side of the body or body part.
Ontology: Spatial Ontology [BSPO:0000682]