part_of part of part of overlaps overlaps adjacent to adjacent to adjacent_to anatomical entity anatomical entity anatomical structure integumental system surface structure Wikipedia:Surface_structure ZFA:0000292 surface region EHDAA2_RETIRED:0003010 Organism subdivision which is the collection of anatomical structures on the body surface.[ZFA] VSAO:0000001 uberon AEO_RETIRED:0000010 surface feature XAO:0003028 anatomical surface feature TAO:0000292 consider obsoleting. See issue/1305 AAO:0010337 galen:SurfaceRegion Anatomical structure that overlaps the outer epithelial layer and is adjacent to the space surrounding the organism. UBERON:0003102 surface structures outer epithelium space surrounding organism