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temporomandibular joint

Go to external page http://purl.obolibrary.org/obo/UBERON_0003700

A synovial joint of the jaw that connects the mandible to the temporal bone. [ http://en.wikipedia.org/wiki/Temporomandibular_joint ]

Synonyms: TMJ temperomandibular joint

This is just here as a test because I lose it

Term information

database cross reference
Subsets

pheno_slim

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].

depicted by

http://upload.wikimedia.org/wikipedia/commons/a/a5/Gray309.png

has related synonym

squamosal-dentary joint

temporomandibular joint

articulatio temporomandibularis

temporomandibular

temporomandibular articulation

temporalmandibular joint

dentary-squamosal joint

tempero-mandibular joint

id

UBERON:0003700