loading...| Preferred Name |
temporomandibular joint |
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| Synonyms |
temperomandibular joint TMJ dentary-squamosal joint squamosal-dentary joint temporomandibular articulation articulatio temporomandibularis temporomandibular tempero-mandibular joint temporalmandibular joint temporomandibular joint |
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| Definitions |
There are two TMJs, one on either side, working in unison. The unique feature of the TMJs is the articular disc. The disc is composed of fibrocartilagenous tissue (like the firm and flexible elastic cartilage of the ear) which is positioned between the two bones that form the joint. The TMJs are one of the only synovial joints in the human body with an articular disc, another being the sternoclavicular joint. The disc divides each joint into two. The lower joint compartment formed by the mandible and the articular disc is involved in rotational movement -- this is the initial movement of the jaw when the mouth opens. The upper joint compartment formed by the articular disk and the temporal bone is involved in translational movement -- this is the secondary gliding motion of the jaw as it is opened widely. The part of the mandible which mates to the under-surface of the disc is the condyle and the part of the temporal bone which mates to the upper surface of the disk is the glenoid (or mandibular) fossa[WP]. A synovial joint of the jaw that connects the mandible to the temporal bone. |
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| ID |
http://purl.obolibrary.org/obo/UBERON_0003700 |
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| comment |
There are two TMJs, one on either side, working in unison. The unique feature of the TMJs is the articular disc. The disc is composed of fibrocartilagenous tissue (like the firm and flexible elastic cartilage of the ear) which is positioned between the two bones that form the joint. The TMJs are one of the only synovial joints in the human body with an articular disc, another being the sternoclavicular joint. The disc divides each joint into two. The lower joint compartment formed by the mandible and the articular disc is involved in rotational movement -- this is the initial movement of the jaw when the mouth opens. The upper joint compartment formed by the articular disk and the temporal bone is involved in translational movement -- this is the secondary gliding motion of the jaw as it is opened widely. The part of the mandible which mates to the under-surface of the disc is the condyle and the part of the temporal bone which mates to the upper surface of the disk is the glenoid (or mandibular) fossa[WP]. |
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| connects | ||
| database_cross_reference |
MESH:D013704 EMAPA:19196 SCTID:181814009 NCIT:C32888 BTO:0003674 Wikipedia:Temporomandibular_joint UMLS:C0039493 FMA:54832 GAID:272 MA:0002899 |
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| definition |
A synovial joint of the jaw that connects the mandible to the temporal bone. |
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| depiction |
http://upload.wikimedia.org/wikipedia/commons/a/a5/Gray309.png |
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| develops_from | ||
| has_exact_synonym |
temperomandibular joint TMJ |
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| has_obo_namespace |
uberon |
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| has_related_synonym |
dentary-squamosal joint squamosal-dentary joint temporomandibular articulation articulatio temporomandibularis temporomandibular tempero-mandibular joint temporalmandibular joint temporomandibular joint |
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| id |
UBERON:0003700 |
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| in lateral side of | ||
| in_subset | ||
| label |
temporomandibular joint |
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| notation |
UBERON:0003700 |
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| part_of | ||
| prefLabel |
temporomandibular joint |
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| treeView | ||
| subClassOf |
http://purl.obolibrary.org/obo/UBERON_0015212 |