subdivision of head face http://purl.bioontology.org/ontology/MESH/D005145 http://purl.obolibrary.org/obo/UBERON_0001456 http://purl.org/sig/ont/fma/fma24728 A subdivision of the head that has as parts the layers deep to the surface of the anterior surface, including the mouth, eyes, and nose (when present). In vertebrates, this includes the facial skeleton and structures superficial to the facial skeleton (cheeks, mouth, eyeballs, skin of face, etc). Subdivision of head, each instance of which has as its constitutional part some viscerocranium (facial skeleton). faces facial