Term: atrium left side
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: left side
Synonyms: left
Definition: The side of an organism that is left of the sagittal plane.
Ontology: Spatial Ontology [BSPO:0000000]