专业术语—口腔生理学术语C1(英文详解)(在线收听) |
Calcium-binding proteins - proteins which have the ability to store calcium ions and to bind onto calcium in the hydroxyapatite of the enamel surface. Calculus - a hard deposit of calcified plaque which is found around the neck of the tooth. When it is above the free gingival margin (supra-gingival) it is white and chalky. When it is below (sub-gingival) it is dark and hard. Candidiasis - an infection caused by Candida albicans, a normal commensal of the mouth; also called "thrush"; Capsule - a fibrous casing surrounding an organ or gland; also a coating for some bacteria which protects them, from the bodies immune system. It is only the variety of Pneumococcus sp. which has a capsule which is able to pass the immune barrier and cause pneumonia Caries - the demineralisation, and breakdown of tooth structure by plaque acids. Cariogenic - likely to cause caries. Sugar is cariogenic because it supports the growth of plaque Carious plaque - types of plaque which are associated with caries . Carnivorous - an animal whose diet consists of animal tissue. CEJ - see cemento-enamel junction. Cell junctions - sites on the cell membrane where cells attach to neighbouring cells. There are three main types. 1. adhering junctions, which anchor cells to each other to resist separation. They may form a belt of adhesions between cells (as between muscle cells) or spot attachments like desmosomes which hold epithelial cells together. 2. tight junctions have no space between the membranes and allow no leakage between cells. They are found between cells of a secreting glands and between endothelial cells of blood vessels to prevent fluid leaking out. 3. gap junctions are channels which allow transfer of small molecules like ions, sugars and amino acids, between cells. |
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