Term: atrial endocardium distal region
Name: atrial endocardium
Synonyms:
Definition: Endocardium that is part of the atrium.
Ontology: Anatomy Ontology [ZFA:0001614]

Name: distal region
Synonyms:
Definition: Anatomical region distally located on the body or body part.
Ontology: Spatial Ontology [BSPO:0000078]