quadrate bone


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Related to quadrate bone: Hyomandibular, quadrate muscle

quadrate bone

[′kwä‚drāt ‚bōn]
(vertebrate zoology)
A small element forming part of the upper jaw joint on each side of the head in vertebrates below mammals.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Flowever, neoplastic infiltration of the quadrate bone could not be excluded from consideration.
In the left quadrate bone, the cavity was replaced diffusely with homogeneously hyperattenuating (230-290 Hounsfield units) material that did not contrast enhance.
We did not observe the character 31 from Hughes (the shape of the optic region in the lateral aspect) because the quadrate bone was obliterating this region in the specimens studied.
Furthermore, the following differences are outstanding among terrestrial and arboreal cuckoos: the squamosal process is progressively longer, sharper and is obliquely projected, as well as the orbital process of the quadrate bone.