RadLex Relations among Terms
Each term will have one of the following relations with its parent:
- CON: Continuous with
- Two structures are "continuous with" one another if they are immediately adjacent and physically connected to one another. This relationship is often used for cavitary and tubular structures, such as the continuity between the left ventricle and the aorta. This is a reflexive relation.
- BR: Branch of
- a smaller conduit is a "branch of" a larger conduit if it is one of a group of two or more conduits that continue in the direction of flow where only one conduits had existed before. It is permissible for one of the continuing conduits to maintain the same name of original conduits. This relation is often used with arteries.
- Branch
- the converse relation to "branch of"
- TRIB: Tributary of
- a smaller conduit is a "tributary of" a larger conduit if it is one of a group of two or more vessels that join to form a single conduit in the direction of flow. This relation is often used with veins.
- Tributary
- the converse relation to "tributary of"
- P: Part of
- one object is "part of" another object if it comprises less than all of the other object. This relation is often used with solid body parts and organs.
- SEG: Segment of
- one tubular structure is a "segment of" another if it defines a part of that structure divided perpendicular to the axis of the tube. This relation is often used to define the subparts of tubular structures, such as arteries, veins, and intestines.
- Part
- the converse relation to "part of"
- Segment
- the converse relation to "segment of"
- C: Contained in
- One structure is "contained in" another if the first structure is inside the other. For example the liver is contained in the abdominal cavity.
- Contains
- the converse relation to "contained in"
- ISA: Is a; Type of
- MEM: Member of
- One structure is a "member of" a set of structures. For example, the "liver" is a member of the "set of viscera of abdomen"
- Member
- the converse relation to "member of"