Ontology term FMA true Classifies anatomical entities according to their shared characteristics (genus) and distinguishing characteristics (differentia). Specifies the part-whole and spatial relationships of the entities, morphological transformation of the entities during prenatal development and the postnatal life cycle and principles, rules and definitions according to which classes and relationships in the other three components of FMA are represented. beta12orEarlier A term from Foundational Model of Anatomy. beta12orEarlier