Term: gill dorsal surface
Name: gill
Synonyms: gills
Definition: Compound organ that consists of gill filaments, gill lamellae, gill rakers and pharyngeal arches 3-7. The gills are responsible for primary gas exchange between the blood and the surrounding water.
Ontology: Anatomy Ontology [ZFA:0000354]

Name: dorsal surface
Synonyms:
Definition: Anatomical surface that located on the dorsal side of the body or body part.
Ontology: Spatial Ontology [BSPO:0000379]