exoccipital


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Related to exoccipital: parietal bone, occipital protuberance

exoccipital

[¦eks·äk′sip·əd·əl]
(anatomy)
Lying to the side of the foramen magnum, as the exoccipital bone.
References in periodicals archive ?
The basisphenoid and the basioccipital begin the ossification process in stage 19, followed by the supraoccipital and the opisthotic in stage 20 and the exoccipital in stage 21 (Figure 3E).
The opisthotic approaches the exoccipital and the squamosal and proceeds in the direction of the prooptic, also in this stage.
Occipito-vertebral articulation formed by spherical basioccipital condyle and paired small, separate exoccipital condyles.
Within the skeletal system there are three major sets of bones involved in the majority of shifts in relative timing: (1) the membrane bones of the face, specifically, the premaxilla, maxilla, and dentary; (2) other, primarily membranous, bones of the calvaria; and (3) the exoccipital.
Within the ossification of cranial bones, only one element exhibits a major difference in its relative place in the developmental sequence: in marsupials, the exoccipital begins ossification relatively early.
El escamoso forma el techo del oido externo, resultando visibles lateralmente las suturas con el exoccipital y el cuadrado.
El arco del exoccipital se extiende internamente hacia la parte basal del supraoccipital, al cual se une por una banda de cartilago.
The exoccipital, supraoccipital, ophisthotic (a cartilaginous bone that ossifies in the posterior half of the otic capsule, according to Gaffney, 1979) and squamosal bones are reduced.
The frontoparietals do not bear crests and are not fused to the prootics or exoccipitals.
Prootics and exoccipitals fused; entire posterior end of skull well ossified; optic foramina ventrally marginated by cartilage; oculomotor foramina marginated anteroventraly by cartilage; prootic and jugular foramina with bony margins; with small bony knob formed below epiotic eminences above occipital condyles.