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Sharpey's fibres in the primary acellular cementum are mineralized fully; those in cellular cementum and bone are mineralized only partially at their periphery. [ 2 ] 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 ...
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In bovine tibia diameter of canaliculi was found to vary from 155 to 844 nm (average 426 nm). [2] In mice humeri it varies from 80 to 710 nm (average 259 nm), while diameter of osteocytic processes varies from 50 to 410 nm (average 104 nm).
Calcification due to degenerative changes in the epithelial cell rests of Malassez [5] Calcification of thrombosed (blocked) capillaries in the periodontal ligament [ 5 ] (i.e. a phlebolith ) [ 6 ] Microtrauma to Sharpey's fibres [ 2 ] causes small spicules of cementum or alveolar bone to splinter into the periodontal membrane [ 4 ] Some do not ...
The alveolar bone proper is also called bundle bone because Sharpey's fibres, part of the PDL, are inserted there. Sharpey's fibres in alveolar bone proper are inserted at a right angle (just as with the cemental surface); they are fewer in number, but thicker in diameter than those found in cementum. [7]
Sharpey was born in Arbroath on 1 April 1802, the youngest son of the five children Mary Balfour and Henry Sharpy (sic), a shipowner from Folkestone who died before Sharpey was born. [ 2 ] William was educated at the high school in Arbroath and, in November 1817, began studies at the University of Edinburgh , firstly studying humanities and ...
A catena in soil science is a series of distinct but co-evolving soils arrayed down a slope. [1] Each soil type or "facet" differs somewhat from its neighbours, but all occur in the same climate and on the same underlying parent material. A mature catena is in equilibrium as the processes of deposition and erosion are in balance.
The main processes of soil formation of oxisols are weathering, humification and pedoturbation due to animals. These processes produce the characteristic soil profile . They are defined as soils containing at all depths no more than ten percent weatherable minerals , and low cation exchange capacity .