730235003: Entire atlantooccipital membrane (body structure)

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

\Body organ structure\Membrane organ structure (body structure)\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body organ structure\Organ part (body structure)\Joint part\Structure of ligament of joint\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body organ structure\Organ part (body structure)\Joint part\Structure of ligament of joint\Structure of ligament of neck\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body organ structure\Structure of ligament\Skeletal ligament structure (body structure)\Structure of ligament of joint\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body organ structure\Structure of ligament\Skeletal ligament structure (body structure)\Structure of ligament of joint\Structure of ligament of neck\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body organ structure\Structure of ligament\Ligament of head and neck\Structure of ligament of neck\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body organ structure\Joint structure\Structure of joint of axial skeleton (body structure)\Joint structure of spine\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body organ structure\Joint structure\Joint part\Structure of ligament of joint\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body organ structure\Joint structure\Joint part\Structure of ligament of joint\Structure of ligament of neck\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)

\Body system structure\Structure of musculoskeletal system\...

\Skeletal ligament structure (body structure)\Structure of ligament of joint\...

\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)

\Structure of ligament of neck\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)

\Structure of regional musculoskeletal system (body structure)\Musculoskeletal structure of spine\Structure of vertebral column\Structure of joint region of vertebral column (body structure)\Joint structure of spine\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Structure of regional musculoskeletal system (body structure)\Musculoskeletal structure of spine\Structure of vertebral column\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Structure of regional musculoskeletal system (body structure)\Musculoskeletal structure of spine\Structure of musculoskeletal system of cervical spine (body structure)\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Structure of regional musculoskeletal system (body structure)\Structure of musculoskeletal system of head and/or neck (body structure)\Musculoskeletal structure of neck\Structure of musculoskeletal system of cervical spine (body structure)\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Structure of regional musculoskeletal system (body structure)\Structure of musculoskeletal system of head and/or neck (body structure)\Musculoskeletal structure of neck\Structure of ligament of neck\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)

\Skeletal system structure\Bone and/or joint structure (body structure)\Joint structure\Structure of joint of axial skeleton (body structure)\Joint structure of spine\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Skeletal system structure\Bone and/or joint structure (body structure)\Joint structure\Joint part\Structure of ligament of joint\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Skeletal system structure\Bone and/or joint structure (body structure)\Joint structure\Joint part\Structure of ligament of joint\Structure of ligament of neck\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Skeletal system structure\Articular system structure\Joint structure\Structure of joint of axial skeleton (body structure)\Joint structure of spine\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Skeletal system structure\Articular system structure\Joint structure\Joint part\Structure of ligament of joint\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Skeletal system structure\Articular system structure\Joint structure\Joint part\Structure of ligament of joint\Structure of ligament of neck\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Skeletal system structure\Axial skeleton structure\Structure of vertebral column\Structure of joint region of vertebral column (body structure)\Joint structure of spine\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Skeletal system structure\Axial skeleton structure\Structure of vertebral column\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)

\Body tissue structure\Structure of soft tissue (body structure)\Skeletal ligament structure (body structure)\Structure of ligament of joint\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body tissue structure\Structure of soft tissue (body structure)\Skeletal ligament structure (body structure)\Structure of ligament of joint\Structure of ligament of neck\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body tissue structure\Structure of soft tissue (body structure)\Structure of soft tissue of head and/or neck\Soft tissues of neck\Structure of soft tissue of cervical region of back\Structure of soft tissue of cervical vertebral column (body structure)\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body tissue structure\Connective tissue structure (body structure)\Structure of ligament\Skeletal ligament structure (body structure)\Structure of ligament of joint\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body tissue structure\Connective tissue structure (body structure)\Structure of ligament\Skeletal ligament structure (body structure)\Structure of ligament of joint\Structure of ligament of neck\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body tissue structure\Connective tissue structure (body structure)\Structure of ligament\Ligament of head and neck\Structure of ligament of neck\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)

\Body region structure\Structure of joint region\Structure of joint region of vertebral column (body structure)\Joint structure of spine\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of joint region\Joint structure\Structure of joint of axial skeleton (body structure)\Joint structure of spine\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of joint region\Joint structure\Joint part\Structure of ligament of joint\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of joint region\Joint structure\Joint part\Structure of ligament of joint\Structure of ligament of neck\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of half of body lateral to midsagittal plane\Structure of half of neck lateral to midsagittal plane (body structure)\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of neck and/or chest and/or abdomen and/or pelvis (body structure)\Neck and/or chest and/or abdomen structure (body structure)\Neck and/or chest structure (body structure)\Neck structure\Soft tissues of neck\Structure of soft tissue of cervical region of back\Structure of soft tissue of cervical vertebral column (body structure)\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of neck and/or chest and/or abdomen and/or pelvis (body structure)\Neck and/or chest and/or abdomen structure (body structure)\Neck and/or chest structure (body structure)\Neck structure\Neck part\Structure of half of neck lateral to midsagittal plane (body structure)\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of neck and/or chest and/or abdomen and/or pelvis (body structure)\Neck and/or chest and/or abdomen structure (body structure)\Neck and/or chest structure (body structure)\Neck structure\Neck part\Posterior region of neck\Structure of cervical vertebral column region (body structure)\Structure of soft tissue of cervical vertebral column (body structure)\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of neck and/or chest and/or abdomen and/or pelvis (body structure)\Neck and/or chest and/or abdomen structure (body structure)\Neck and/or chest structure (body structure)\Neck structure\Neck part\Posterior region of neck\Structure of cervical vertebral column region (body structure)\Structure of musculoskeletal system of cervical spine (body structure)\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of neck and/or chest and/or abdomen and/or pelvis (body structure)\Neck and/or chest and/or abdomen structure (body structure)\Neck and/or chest structure (body structure)\Neck structure\Neck part\Posterior region of neck\Structure of soft tissue of cervical region of back\Structure of soft tissue of cervical vertebral column (body structure)\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of neck and/or chest and/or abdomen and/or pelvis (body structure)\Neck and/or chest and/or abdomen structure (body structure)\Neck and/or chest structure (body structure)\Neck structure\Neck part\Musculoskeletal structure of neck\Structure of musculoskeletal system of cervical spine (body structure)\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of neck and/or chest and/or abdomen and/or pelvis (body structure)\Neck and/or chest and/or abdomen structure (body structure)\Neck and/or chest structure (body structure)\Neck structure\Neck part\Musculoskeletal structure of neck\Structure of ligament of neck\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of regional musculoskeletal system (body structure)\Musculoskeletal structure of spine\Structure of vertebral column\Structure of joint region of vertebral column (body structure)\Joint structure of spine\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of regional musculoskeletal system (body structure)\Musculoskeletal structure of spine\Structure of vertebral column\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of regional musculoskeletal system (body structure)\Musculoskeletal structure of spine\Structure of musculoskeletal system of cervical spine (body structure)\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of regional musculoskeletal system (body structure)\Structure of musculoskeletal system of head and/or neck (body structure)\Musculoskeletal structure of neck\Structure of musculoskeletal system of cervical spine (body structure)\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of regional musculoskeletal system (body structure)\Structure of musculoskeletal system of head and/or neck (body structure)\Musculoskeletal structure of neck\Structure of ligament of neck\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of back of trunk and/or neck\Structure of vertebral column region (body structure)\Structure of cervical and/or thoracic vertebral column region (body structure)\Structure of cervical vertebral column region (body structure)\Structure of soft tissue of cervical vertebral column (body structure)\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of back of trunk and/or neck\Structure of vertebral column region (body structure)\Structure of cervical and/or thoracic vertebral column region (body structure)\Structure of cervical vertebral column region (body structure)\Structure of musculoskeletal system of cervical spine (body structure)\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of back of trunk and/or neck\Structure of vertebral column region (body structure)\Structure of vertebral column and/or spinal cord\Structure of vertebral column\Structure of joint region of vertebral column (body structure)\Joint structure of spine\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of back of trunk and/or neck\Structure of vertebral column region (body structure)\Structure of vertebral column and/or spinal cord\Structure of vertebral column\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of back of trunk and/or neck\Structure of vertebral column region (body structure)\Musculoskeletal structure of spine\Structure of vertebral column\Structure of joint region of vertebral column (body structure)\Joint structure of spine\Structure of ligament of spine\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of back of trunk and/or neck\Structure of vertebral column region (body structure)\Musculoskeletal structure of spine\Structure of vertebral column\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of back of trunk and/or neck\Structure of vertebral column region (body structure)\Musculoskeletal structure of spine\Structure of musculoskeletal system of cervical spine (body structure)\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of back of trunk and/or neck\Posterior region of neck\Structure of cervical vertebral column region (body structure)\Structure of soft tissue of cervical vertebral column (body structure)\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of back of trunk and/or neck\Posterior region of neck\Structure of cervical vertebral column region (body structure)\Structure of musculoskeletal system of cervical spine (body structure)\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Structure of back of trunk and/or neck\Posterior region of neck\Structure of soft tissue of cervical region of back\Structure of soft tissue of cervical vertebral column (body structure)\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Structure of occipitocervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Scalp and/or neck structure (body structure)\Neck structure\Soft tissues of neck\Structure of soft tissue of cervical region of back\Structure of soft tissue of cervical vertebral column (body structure)\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Scalp and/or neck structure (body structure)\Neck structure\Neck part\Structure of half of neck lateral to midsagittal plane (body structure)\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Scalp and/or neck structure (body structure)\Neck structure\Neck part\Posterior region of neck\Structure of cervical vertebral column region (body structure)\Structure of soft tissue of cervical vertebral column (body structure)\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Scalp and/or neck structure (body structure)\Neck structure\Neck part\Posterior region of neck\Structure of cervical vertebral column region (body structure)\Structure of musculoskeletal system of cervical spine (body structure)\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Scalp and/or neck structure (body structure)\Neck structure\Neck part\Posterior region of neck\Structure of soft tissue of cervical region of back\Structure of soft tissue of cervical vertebral column (body structure)\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Scalp and/or neck structure (body structure)\Neck structure\Neck part\Musculoskeletal structure of neck\Structure of musculoskeletal system of cervical spine (body structure)\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Scalp and/or neck structure (body structure)\Neck structure\Neck part\Musculoskeletal structure of neck\Structure of ligament of neck\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Face and/or neck structure (body structure)\Neck structure\Soft tissues of neck\Structure of soft tissue of cervical region of back\Structure of soft tissue of cervical vertebral column (body structure)\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Face and/or neck structure (body structure)\Neck structure\Neck part\Structure of half of neck lateral to midsagittal plane (body structure)\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Face and/or neck structure (body structure)\Neck structure\Neck part\Posterior region of neck\Structure of cervical vertebral column region (body structure)\Structure of soft tissue of cervical vertebral column (body structure)\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Face and/or neck structure (body structure)\Neck structure\Neck part\Posterior region of neck\Structure of cervical vertebral column region (body structure)\Structure of musculoskeletal system of cervical spine (body structure)\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Face and/or neck structure (body structure)\Neck structure\Neck part\Posterior region of neck\Structure of soft tissue of cervical region of back\Structure of soft tissue of cervical vertebral column (body structure)\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Face and/or neck structure (body structure)\Neck structure\Neck part\Musculoskeletal structure of neck\Structure of musculoskeletal system of cervical spine (body structure)\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Face and/or neck structure (body structure)\Neck structure\Neck part\Musculoskeletal structure of neck\Structure of ligament of neck\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Structure of musculoskeletal system of head and/or neck (body structure)\Musculoskeletal structure of neck\Structure of musculoskeletal system of cervical spine (body structure)\Cervical spine structure\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Structure of musculoskeletal system of head and/or neck (body structure)\Musculoskeletal structure of neck\Structure of ligament of neck\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Structure of soft tissue of head and/or neck\Soft tissues of neck\Structure of soft tissue of cervical region of back\Structure of soft tissue of cervical vertebral column (body structure)\Ligament of spine in cervical region\Atlantooccipital membrane\Entire atlantooccipital membrane (body structure)

Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jul 2017. Module: SNOMED CT core

Descriptions:

Id Description Lang Type Status Case? Module

3459474013 Entire atlantooccipital membrane (body structure) en Fully specified name Active Entire term case insensitive (core metadata concept) SNOMED CT core

3459475014 Entire atlantooccipital membrane en Synonym (core metadata concept) Active Entire term case insensitive (core metadata concept) SNOMED CT core

3459474013 Entire atlantooccipital membrane (body structure) en Fully specified name Active Entire term case insensitive (core metadata concept) SNOMED CT core

3459475014 Entire atlantooccipital membrane en Synonym (core metadata concept) Active Entire term case insensitive (core metadata concept) SNOMED CT core

Expanded Value Set

Outbound Relationships	Type	Target	Active	Characteristic	Refinability	Group	Values
Entire atlantooccipital membrane (body structure)	Is a	Atlantooccipital membrane	true	Inferred relationship	Existential restriction modifier (core metadata concept)
Entire atlantooccipital membrane (body structure)	Laterality	Side	true	Inferred relationship	Existential restriction modifier (core metadata concept)

Inbound Relationships

Type

Active

Source

Characteristic

Refinability

Group

Reference Sets

Lateralizable body structure reference set (foundation metadata concept)

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Id	Description	Lang	Type	Status	Case?	Module
3459474013	Entire atlantooccipital membrane (body structure)	en	Fully specified name	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core
3459475014	Entire atlantooccipital membrane	en	Synonym (core metadata concept)	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core
3459474013	Entire atlantooccipital membrane (body structure)	en	Fully specified name	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core
3459475014	Entire atlantooccipital membrane	en	Synonym (core metadata concept)	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core