Sharpey's fibres


Sharpey's fibres

Sharpey's fibres (bone fibres, or perforating fibres) are a matrix of connective tissue consisting of bundles of strong collagenous fibres connecting periosteum to bone. They are part of the outer fibrous layer of periosteum, entering into the outer circumferential and interstitial lamellae of bone tissue.

In the teeth, Sharpey's fibres are the ends of principal fibres that insert into the cementum. A study on rats suggests that the three-dimensional structure of Sharpey's fibres intensifies the continuity between the periodontal ligament fibre and the alveolar bone (tooth socket), and acts as a buffer medium against stress.Sharpey's Fibres in the primary acellular cementum are mineralized fully; those in cellular cementum and bone are mineralized only partially at their periphery. [cite journal
last = Kuroiwa
first = M
authorlink =
coauthors = Chihara K, Higashi S
title = Electron microscopic studies on Sharpey's fibers in the alveolar bone of rat molars
journal = Kaibogaku Zasshi
volume = 69
issue = 6
pages = 776–82
publisher =
date = 1994
url =
doi =
pmid = 7887126
accessdate =
]

In the skull the main function of Sharpey's fibres is to bind the cranial bones in a firm but moveable manner; they are most numerous in areas where the bones are subjected to the greatest forces of separation. In the spine, similar fibres join the intervertebral disk to the adjacent vertrebrae. [cite web
url=http://www.macdonaldpublishing.com/
title=Backache: From Occiput to Coccyx
author=Gerald L. Burke
publisher=MacDonald Publishing
accessdate=2008-03-14
] Each fibre is accompanied by an arteriole and one or more nerve fibres. [cite journal
last = Retzlaff
first = EW
authorlink =
coauthors = Mitchell FL, Upledger JE
title = Efficacy of Cranial Sacral Manipulation: The Physiological Mechanism of the Cranial Sutures
journal = J Soc. Osteopaths
volume =
issue = 12
pages =
publisher =
date = 1982-3
url =
doi =
id = ISSN 0308-8766
accessdate =
]

English anatomist William Sharpey described them in 1846.

References


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Sharpey's fibres — fibres in scales of Brachiopterygii and Lepisosteidae. Also known from bones and teeth, these fibres are formed of periosteal connective tissue collagen …   Dictionary of ichthyology

  • fibres of Sharpey — fibres in scales of Brachiopterygii and Lepisosteidae …   Dictionary of ichthyology

  • Edward Albert Sharpey-Schafer — Infobox Scientist name = Edward Albert Sharpey Schafer box width = image width =150px caption = Edward Albert Sharpey Schafer birth date = June 2 1850 birth place = Hornsey, Middlesex death date = March 29 1935 death place = North Berwick, East… …   Wikipedia

  • Fibre de Sharpey — Les fibres de Sharpey sont une matrice de tissu conjonctif consistant en regroupements de fortes fibres de collagène reliant le périoste à l os. Elles font partie de la couche fibreuse externe du périoste, pénétrant dans le tissu osseux… …   Wikipédia en Français

  • William Sharpey — (1802–1880) était un anatomiste and physiologiste écossais. Vie et carrière William Sharpey était un correspondant et un ami de Charles Darwin. Il contribua aux nombreuses éditions du Quain’s Anatomy et était l un des secrétaires de la Royal… …   Wikipédia en Français

  • List of human anatomical parts named after people — This is a list of human anatomical parts named after people. :For other lists of eponyms (names derived from people) see eponym.:For a list of eponyms sorted by name see List of eponyms.Alphabetical listFor clarity, entries are listed by the name …   Wikipedia

  • Bone — This article is about the skeletal organ. For other uses, see Bone (disambiguation) and Bones (disambiguation). For the tissue, see Osseous tissue. Drawing of a human femur Bones are rigid organs that constitute part of the endoskeleton of… …   Wikipedia

  • Cartilage — Hyaline cartilage showing chondrocytes and organelles, lacunae and matrix Cartilage …   Wikipedia

  • Bone marrow — Simplified illustration of cells in bone marrow. Latin medulla ossium Code TA …   Wikipedia

  • Sesamoid bone — Bone: Sesamoid bone Sagittal section of right knee joint …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.