Source:http://linkedlifedata.com/resource/umls/id/C0922959
FMA: Anatomical structure, which has as its parts a heterogeneous collection of organs, organ parts, cells, cell parts or body part subdivisions that are adjacent to, or continuous with one another; does not constitute a cell part, cell, tissue, organ, organ system or organ system subdivision, cardinal body part, body part subdivision or anatomical junction. Examples: joint, adnexa of uterus, root of lung, renal pedicle, back.,UWDA: Anatomical structure, which consists of a heterogeneous set of organs, organ parts, cells or body part subdivisions; members of the set are adjacent to, or continuous with one another; does not constitute an organ, organ system or organ system subdivision, or body part or body part subdivision. Examples: joint, adnexa of uterus, root of lung, renal pedicle, back.