368332002: Entire extensor tendon within middle finger (body structure)

SNOMED CT Concept\Body structure\Anatomical or acquired body structure (body structure)\Anatomical structure\...

\Body system structure\Structure of musculoskeletal system (body structure)\...

\Structure of regional musculoskeletal system (body structure)\Musculoskeletal structure of limb\Musculoskeletal structure of upper limb\...

\Musculoskeletal structure of hand\Structure of muscle and/or tendon within hand (body structure)\Structure of tendon within hand (body structure)\Structure of extensor tendon within hand\Structure of extensor tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of muscle and/or tendon within hand (body structure)\Structure of tendon within hand (body structure)\Structure of extensor tendon within hand\Structure of extensor tendon within finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of muscle and/or tendon within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of muscle and/or tendon within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of muscle and/or tendon within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of muscle and/or tendon within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of muscle and/or tendon within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of muscle and/or tendon within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon within hand (body structure)\Structure of extensor tendon within hand\Structure of extensor tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon within hand (body structure)\Structure of extensor tendon within hand\Structure of extensor tendon within finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon and/or tendon sheath within finger (body structure)\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon and/or tendon sheath within finger (body structure)\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon and/or tendon sheath within finger (body structure)\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon and/or tendon sheath within finger (body structure)\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon and/or tendon sheath within finger (body structure)\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Musculoskeletal structure of hand\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon and/or tendon sheath within finger (body structure)\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)

\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\...

\Structure of extensor tendon within hand\Structure of extensor tendon within finger (body structure)\...

\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)

\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)

\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)

\Skeletal muscle system structure\Skeletal muscle and/or tendon structure\Tendon structure\...

\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\...

\Structure of extensor tendon within hand\Structure of extensor tendon within finger (body structure)\...

\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)

\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)

\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)

\Structure of extensor tendon\Structure of extensor tendon within hand\Structure of extensor tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Structure of extensor tendon\Structure of extensor tendon within hand\Structure of extensor tendon within finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Structure of extensor tendon\Entire extensor tendon\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)

\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\Structure of extensor tendon within hand\Structure of extensor tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\Structure of extensor tendon within hand\Structure of extensor tendon within finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon within hand (body structure)\Structure of extensor tendon within hand\Structure of extensor tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon within hand (body structure)\Structure of extensor tendon within hand\Structure of extensor tendon within finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon and/or tendon sheath within finger (body structure)\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon and/or tendon sheath within finger (body structure)\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon and/or tendon sheath within finger (body structure)\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon and/or tendon sheath within finger (body structure)\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon and/or tendon sheath within finger (body structure)\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Structure of tendon and/or tendon sheath within upper limb\Structure of tendon and/or tendon sheath within hand (body structure)\Structure of tendon and/or tendon sheath within finger (body structure)\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Tendon structure\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\Structure of extensor tendon within hand\Structure of extensor tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Tendon structure\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\Structure of extensor tendon within hand\Structure of extensor tendon within finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Tendon structure\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Tendon structure\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of extensor tendon within finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Tendon structure\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Tendon structure\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Structure of tendon within middle finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Tendon structure\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire tendon within middle finger\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Tendon structure\Structure of tendon within upper limb\Structure of tendon within wrist and/or hand (body structure)\Structure of tendon within hand (body structure)\Structure of tendon within finger (body structure)\Entire tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Tendon structure\Structure of extensor tendon\Structure of extensor tendon within hand\Structure of extensor tendon within finger (body structure)\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Tendon structure\Structure of extensor tendon\Structure of extensor tendon within hand\Structure of extensor tendon within finger (body structure)\Structure of extensor tendon within middle finger (body structure)\Entire extensor tendon within middle finger (body structure)
\Tendon and/or tendon sheath structure (body structure)\Tendon structure\Structure of extensor tendon\Entire extensor tendon\Entire extensor tendon within finger (body structure)\Entire extensor tendon within middle finger (body structure)

Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jan 2002. Module: SNOMED CT core

Descriptions:

Id Description Lang Type Status Case? Module

508269016 Entire extensor tendon of middle finger en Synonym (core metadata concept) Active Entire term case insensitive (core metadata concept) SNOMED CT core

4953005012 Entire extensor tendon within middle finger (body structure) en Fully specified name Active Entire term case insensitive (core metadata concept) SNOMED CT core

4953006013 Entire extensor tendon within middle finger en Synonym (core metadata concept) Active Entire term case insensitive (core metadata concept) SNOMED CT core

904791000052110 extensorsena i långfinger, som helhet sv Synonym (core metadata concept) Active Entire term case insensitive (core metadata concept) SNOMED CT Sweden NRC maintained module (core metadata concept)

Expanded Value Set

Outbound Relationships	Type	Target	Active	Characteristic	Refinability	Group	Values
Entire extensor tendon within middle finger (body structure)	Is a	Structure of extensor tendon within middle finger (body structure)	true	Inferred relationship	Some
Entire extensor tendon within middle finger (body structure)	Is a	Entire extensor tendon within finger (body structure)	true	Inferred relationship	Some
Entire extensor tendon within middle finger (body structure)	Is a	Entire tendon within middle finger	true	Inferred relationship	Some
Entire extensor tendon within middle finger (body structure)	del av	Entire tendon and tendon sheath	false	Additional relationship	Some
Entire extensor tendon within middle finger (body structure)	del av	Entire middle finger	false	Additional relationship	Some
Entire extensor tendon within middle finger (body structure)	Laterality	Side	true	Inferred relationship	Some

Inbound Relationships

Type

Active

Source

Characteristic

Refinability

Group

Reference Sets

Lateralizable body structure reference set (foundation metadata concept)