在线观看亚洲精品专区-在线观看亚洲免费-在线观看亚洲免费视频-在线观看亚洲欧美-欧美freexxx-欧美free嫩交video

食品伙伴網(wǎng)服務(wù)號
 
 
當(dāng)前位置: 首頁 » 專業(yè)英語 » 專業(yè)詞匯 » 正文

口腔生理學(xué)術(shù)語L

放大字體  縮小字體 發(fā)布日期:2008-06-02
核心提示:Lamella-bone - the microscopic structure of cortical bone gives it the appearance of concentric or parallel plates ( from Latin, lamella, the diminutive of lamina, meaning a plate or leaf). Lamina propria - the layer of loose connective tissue under


    Lamella-bone - the microscopic structure of cortical bone gives it the appearance of concentric or parallel plates ( from Latin, lamella, the diminutive of lamina, meaning a plate or leaf).

    Lamina propria - the layer of loose connective tissue underneath the epithelium of mucosa, which provides physical and nutritional support.

    Lamina-dura - the name given to the radiographic appearance of a dense layer of bone around the tooth root. It represents the dense cortical bone lining the tooth socket.

    Laminin - an adhesive molecule of connective tissue related to fibronectin andtenascin.

    Langherhans cells are active in the immune response of the skin and mucous membrane. They act as sentries, detecting the presence of foreign antigens on the surface of the epithElium. They do not contain keratin and are thus sometimes called clear cells.

    Lectin - a protein molecule which bindson to a specific sequence of sugars. Bacteria may use lectin attachments to bind onto each other or oral surfaces.

    Leucocytes - un pigmented (white) cells of the blood. Those with granular cy lasm are neutrophils, eosinophils and basophils. The agranulocytes are lymphocytes and monocytes.

    Leucotriens- concerned with signalling between cells of the immune system and a member of the eicosanoid family of hormones.

    Ligand - a protein molecule which binds to another specific protein molecule. The forces of the bond are week and thus protein-ligand bonds depend on close fit of one molecule to the other, so as to capture as many bonding sites as possible. Ligands are specific for a particular protein. They are found on cell surfaces of microorganisms where they assist in cell adhesion. They are also sights on cell membranes onto which protein messengers attach such ascytokines (see also lectins).

    Limbic system - a ring of structures around the thalamus which play a major role in pain as well as other types of behaviour. The limbic system includes the hypothalamus, hippocampus, amygdala, septum and cingulum. The limbic system plays an important role in pain at the level of motivation to avoid it. It thus operates at a slightly higher level than the reticular formation with strong connections to the thalamus and cortex.

    Lipid - - large molecules containing hydrogen and carbon which are insoluble in water. Simple lipids consist of long chains of fatty acids. Compound lipids contain phosphoric acid, sugars, nitrogenous bases or proteins, and include the phospholipids, glycolipids and lipoproteins. Steroids may also be classified as lipids.

    Lubrication - helping two surfaces to slide over each other.

    Lycine - one of 20 aminoacids common in proteins. It is a common amino acid of collagen and like proline must be hydroxylated by ascorbic acid in order to allow the formation of bonds which will hold the triple helix together..

    Lymphocytes - white cells involved in the immune response. B lymphocytes are so called because they mature in bone while T lymphocytes mature in the thymus. Both cells look alike until they recognise a foreign antigen. The B cell starts to make antibodies while the T lymphocytes accumulate vesicles loaded with cytotoxic agents. On contact with a foreign cell, the lymphocytes changes shape so that all it vesicles are pointed at the enemy. The release of cytotoxic agents need to be carefully controlled. One of the methods by which the enemy cell is killed is by agents which make holes in its cell membrane. Enemy cells maybe bacteria, or the bodies own cells which have ingested viruses or they may be cancer cells, or the cells of transplanted organs.

    Lymphokines - a variety of cytokines released by lymphocytes which coordinate the proliferation of T and B lymphocytes. They also regulate the brain's contribution to the immune response via the hypothalamus - adrenal cortex axis.

    Lysosomes - small membrane bound vesicles in the cy lasm of cells which contain toxic enzymes. When a cell dies, these membranes rupture and the enzymes are released. They break down the cells structure, and the debris is removed. The lysosome also contains cytokines which summon inflammatory cells and stimulate inflammation. The contents of lysosomes can be released by macrophages and neutrophils both to kill bacteria and viruses, and to stimulate inflammation.

更多翻譯詳細(xì)信息請點擊:http://www.trans1.cn
 
關(guān)鍵詞: 口腔 生理學(xué)
[ 網(wǎng)刊訂閱 ]  [ 專業(yè)英語搜索 ]  [ ]  [ 告訴好友 ]  [ 打印本文 ]  [ 關(guān)閉窗口 ] [ 返回頂部 ]
分享:

 

 
推薦圖文
推薦專業(yè)英語
點擊排行
 
 
Processed in 0.079 second(s), 15 queries, Memory 0.89 M
主站蜘蛛池模板: 国产精品好好热在线观看 | 好黄好硬好爽好刺激 | 亚洲 欧美 日韩 在线 中文字幕 | 欧美男人的天堂 | 天天爱天天做天天爽 | 日本特黄色大片 | 男女性高爱潮免费的国产 | 久久天天躁夜夜躁狠狠躁2015 | 在线色资源| 日本在线不卡一区 | 国产乱人视频在线看 | 福利片网站 | 手机看片国产免费现在观看 | 中文一区二区 | 中文字幕一区二区三区在线播放 | 成人免费视频一区 | www.一区二区三区 | 国产精品三区四区 | 米奇777色狠狠8888影视 | 福利体验区 | 欧美综合成人网 | 免费人成网址在线观看国内 | 美女黄网站人色视频免费国产 | 一级片观看 | 老师您的兔子好软水好多动漫视频 | 欧美色综合久久 | 五月网婷婷 | 午夜欧美精品 | 色综合天天干 | 精品国产乱码久久久久久浪潮 | 免费精品99久久国产综合精品 | 亚洲综合亚洲综合网成人 | 天天做天天爱天天综合网 | 人与牲动交xxxxbbbb | 亚洲欧美高清在线 | 口述他拿舌头进去我下面好爽 | 日本在线不卡一区二区 | 欧美一级淫片免费播放口 | 狠狠燥| 四虎影院永久网址 | 精品色综合 |