from The Century Dictionary.
- Pertaining to or having the nature of an epiphysis.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective Alternative form of
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adjective relating to the epiphysis of a bone
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The extremities do not, however, become joined to the body of the bone by bony tissue until growth has ceased; between the body and either extremity a layer of cartilaginous tissue termed the epiphysial cartilage persists for a definite period.
The exact significance of these roots is a matter for speculation, but it seems possible that they are epiphysial structures remotely comparable with the epiphysial (pineal) complex of the craniate vertebrates.
On each lateral surface two epiphysial plates are developed (Figs. 109, 110): one for the auricular surface, and another for the remaining part of the thin lateral edge of the bone.
In young bones the periosteum is thick and very vascular, and is intimately connected at either end of the bone with the epiphysial cartilage, but less closely with the body of the bone, from which it is separated by a layer of soft tissue, containing a number of granular corpuscles or osteoblasts, by which ossification proceeds on the exterior of the young bone.
In addition to these there is a secondary center for a thin epiphysial plate on the under surface of the body of the bone.
About the sixteenth year the epiphysial plates for the upper and under surfaces of the bodies are formed; and between the eighteenth and twentieth years, those for the lateral surfaces make their appearance.
They increase in length by ossification continuing to extend behind the epiphysial cartilage, which goes on growing in advance of the ossifying process.
The Transverse Humeral Ligament (Fig. 327) is a broad band passing from the lesser to the greater tubercle of the humerus, and always limited to that portion of the bone which lies above the epiphysial line.
Each rib, with the exception of the last two, is ossified from four centers; a primary center for the body, and three epiphysial centers, one for the head and one each for the articular and non-articular parts of the tubercle.
The apex of the odontoid process has a separate center which appears in the second and joins about the twelfth year; this is the upper epiphysial lamella of the atlas.