Source:http://linkedlifedata.com/resource/umls/id/C0932492
FMA: Anatomical cluster which has as its direct parts all or some members of one or more organ part types which are grouped together according to some shared attributes. Examples: root of lung, internal nose, soft palate, wall of gut, periorbita.,UWDA: Anatomical cluster which consists of all or some members of one or more organ part subclasses which are grouped together according to some shared attributes. Examples: root of lung, internal nose, soft palate, wall of gut, periorbita.