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synarthrosis : ウィキペディア英語版
synarthrosis

A synarthroses is a type of joint which permits very little or no movement under normal conditions. Most synarthroses joints are fibrous.
Suture joints and Gomphosis joints are synarthroses.
==Types==
They can be categorised by how the two bones are joined together:
* ''Gomphoses'' are found in the sockets of the teeth. The socket of a tooth is often referred to as a gomphosis (type of a joint in which a conical peg fits into a socket). Normally, there should be an absolutely minimal amount of movement of the teeth in the mandible or maxilla.
* ''Synostoses'' are where two bones that are initially separated eventually fuse together, essentially becoming one bone. In humans the plates of the cranium fuse together as a child approaches adulthood. Children whose cranial plates fuse too early may suffer deformities and brain damage as the skull does not expand properly to accommodate the growing brain, a condition known as craniostenosis.
*Synchondroses are cartilaginous joint connected by hyaline cartilage, as seen in the epiphyseal plate.
*Sutures are fibrous joints made of a thin layer of dense fibrous connective tissue that unites skull bones.〔Principles of Anatomy & Physiology, 12th Edition, Tortora & Derrickson, Pub: Wiley & Sons〕
*

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「synarthrosis」の詳細全文を読む



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