Haversian canals are a series of tubes around narrow channels formed by lamellae. They are arranged in parallel to the long axis of the bone. The Haversian canals surround bloods vessels and nerve cells throughout the bone and communicate with osteocytes in lacunae (spaces within the dense bone matrix that contain the living bone cells) through canaliculi. Image File history File links Illu_compact_spongy_bone. ... Latin is an ancient Indo-European language originally spoken in the region around Rome called Latium. ... In biology, an organ is a group of tissues which perform some function. ... Embryology is the branch of developmental biology that studies embryos and their development. ... Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ... Elseviers logo Elsevier, the worlds largest publisher of medical and scientific literature, forms part of the Reed Elsevier group. ... Lamellae is a term for several very different biological and material structures. ... A lacuna is a gap in a manuscript, inscription or text. ...
It is covered by a dense structure, formed by the periosteum and mucous membrane of the mouth, which are intimately adherent.
On either side and in front of the raphé the mucous membrane is thick, pale in color, and corrugated; behind, it is thin, smooth, and of a deeper color; it is covered with stratified squamous epithelium, and furnished with numerous palatal glands, which lie between the mucous membrane and the surface of the bone.
In the thicker portions of the crusta petrosa, the lamellæ and Haversiancanals peculiar to bone are also found.
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