exoccipital bone
Paired cartilage bone that bears a large foramen (lateral occipital foramen). Contacts the supraoccipital dorsally, the epiotic laterally and the basioccipital ventrally. Forms the posterior hind margin of the cranium and borders the lateral and posterior margins of the forum (foramen) magnum.
Exact Synonyms
exoccipital
exoccipitals
lateral part of occipital bone
pars lateralis ossis occipitalis
Related Synonyms
pars lateralis
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class Information
axiom_lost_from_external_ontology
- relationship type change: overlaps neurocranium (TAO:0001580) CHANGED TO: part_of neurocranium (neurocranium)[TAO]
- relationship loss: overlaps basioccipital-exoccipital joint (TAO:0002038)[TAO]
- relationship loss: overlaps prootic-exoccipital joint (TAO:0002034)[TAO]
- relationship loss: develops_from occipital arch cartilage (TAO:0001504)[TAO]
editor note
TODO - check FMA - currently we place this as both of a zone of bone organ and an (endochondral) bone. Removed endochondral bone classification for now, violates disjointness axiom
external_comment
In some teleosts the exoccipital dorsally contacts the supraoccipital directly or through connective tissue.[TAO]
external_definition
- Endochondral bone that articulates with the epiotic dorsally, the pterotic and intercalar laterally and the basioccipital medio-ventrally. The exoccipitals form the lateral borders of the foramen magnum and houses the foramina for the passage of the vagus and glossopharyngeal nerves, X and IX respectively. The exoccipital is a paired bone.[TAO]
- Endochondral bone that forms the posterior end of the neurocranium and the margin of the foramen magnum. In addition, this bone forms either part of or all or the occipital condyle.[AAO]
has_dbxref
has_obo_namespace
uberon
class Relations
Equivalent to
Subclass of
- endochondral bone
- neurocranium bone
- exoccipital endochondral element
- part ofrosomeneurocranium
- part ofrosomechondrocranium
- part ofrosomeoccipital region
- develops fromrosomeparachordal cartilage
- develops fromrosomeexoccipital cartilage element
- composed primarily ofrosomebone tissue
- develops fromrosomeparachordal cartilage
- part ofrosomeoccipital region
Related from
has potential to develop into