在线英语听力室

专业术语—口腔生理学术语M3(英文详解)

时间:2006-06-21 16:00:00

(单词翻译:单击)

    Morphogenesis - the process in which tissue shapes and organ structures are developed during embryology.

    Morphogenic fieled - an environment in which the shape or pattern of a developing organ is determined2.

    Motoneurone - nerve cells with their cell bodies in the brain stem or spinal3 cord, which transmit impulses along their axons to effector organs, including endocrine, exocrine glands4 and muscles fibres. The axons of most motoneurones have many branches, each of which ends at a neuromuscular junction5. The group of muscle cells innervated by one motoneurone is called a motor unit.

    Mucoperiosteum - a type of oral mucosa which has a fibrous lamina propria, no submucosa, and is attached to the underlying6 periosteum of bone. The attached gingiva is a mucoperiosteum.

    Mucous7 - a secretion8 which is viscous9 and slimy due to the presence ofglycoproteins.

    Mutation10 - a change in the order of nucleotide bases on a gene1, which alters the configuration11 of the protein produced, and thus may alter the behaviour of the cell. A mutation may cause a cell to die, or become cancerous. Mutations in bacteria and viruses help them to evade12 detection by their hosts.

    Myelin - the fatty covering of myelinated nerves which appears white to the naked eye. The parts of the brain and spinal cord, in which myelinated nerves run, has therefore been called the "white" matter as distinct from the "grey" matter composed of nerve cells. Myelin also contains about 20 % of proteins whose prime role is to mediate13 adhesion between adjacent Schwann cells. These cell membrane14 glycoproteins are also members of the immunoglobulin family of cell surface proteins. Defects in the these surface proteins may cause them to act as antigens to the immune system. The disease multiple sclerosis is caused by antibodies to the myelin proteins, which results in inflammation and loss of myelin.

    Myelinated - nerves axons which are completely wrapped in a sheath of myelin by schwann cells. One cell wraps about a millimetre of nerve axon. Myelinated nerve axons carry impulses faster then unmeyelinated nerves as the impulse jumps across the myelin sheath of each adjacent Schwann cell to that of the next.


分享到:


点击收听单词发音收听单词发音  

1 gene WgKxx     
n.遗传因子,基因
参考例句:
  • A single gene may have many effects.单一基因可能具有很多种效应。
  • The targeting of gene therapy has been paid close attention.其中基因治疗的靶向性是值得密切关注的问题之一。
2 determined duszmP     
adj.坚定的;有决心的
参考例句:
  • I have determined on going to Tibet after graduation.我已决定毕业后去西藏。
  • He determined to view the rooms behind the office.他决定查看一下办公室后面的房间。
3 spinal KFczS     
adj.针的,尖刺的,尖刺状突起的;adj.脊骨的,脊髓的
参考例句:
  • After three days in Japan,the spinal column becomes extraordinarily flexible.在日本三天,就已经使脊椎骨变得富有弹性了。
  • Your spinal column is made up of 24 movable vertebrae.你的脊柱由24个活动的脊椎骨构成。
4 glands 82573e247a54d4ca7619fbc1a5141d80     
n.腺( gland的名词复数 )
参考例句:
  • a snake's poison glands 蛇的毒腺
  • the sebaceous glands in the skin 皮脂腺
5 junction N34xH     
n.连接,接合;交叉点,接合处,枢纽站
参考例句:
  • There's a bridge at the junction of the two rivers.两河的汇合处有座桥。
  • You must give way when you come to this junction.你到了这个路口必须让路。
6 underlying 5fyz8c     
adj.在下面的,含蓄的,潜在的
参考例句:
  • The underlying theme of the novel is very serious.小说隐含的主题是十分严肃的。
  • This word has its underlying meaning.这个单词有它潜在的含义。
7 mucous S6XzD     
adj. 黏液的,似黏液的
参考例句:
  • Healthy,skin,mucous membranes,and cilia are natural barriers to many viruses.健康的皮肤,粘膜和纤毛是许多病毒的天然屏障。
  • Seromucous glands contain both mucous and serous cells.浆粘液腺既含有粘液性细胞,又含有浆液性细胞。
8 secretion QDozG     
n.分泌
参考例句:
  • Is there much secretion from your eyes?你眼里的分泌物多吗?
  • In addition,excessive secretion of oil,water scarcity are also major factors.除此之外,油脂分泌过盛、缺水也都是主要因素。
9 viscous KH3yL     
adj.粘滞的,粘性的
参考例句:
  • Gases are much less viscous than liquids.气体的粘滞性大大小于液体。
  • The mud is too viscous.You must have all the agitators run.泥浆太稠,你们得让所有的搅拌机都开着。
10 mutation t1PyM     
n.变化,变异,转变
参考例句:
  • People who have this mutation need less sleep than others.有这种突变的人需要的睡眠比其他人少。
  • So far the discussion has centered entirely around mutation in the strict sense.到目前为止,严格来讲,讨论完全集中于围绕突变问题上。
11 configuration nYpyb     
n.结构,布局,形态,(计算机)配置
参考例句:
  • Geographers study the configuration of the mountains.地理学家研究山脉的地形轮廓。
  • Prices range from $119 to $199,depending on the particular configuration.价格因具体配置而异,从119美元至199美元不等。
12 evade evade     
vt.逃避,回避;避开,躲避
参考例句:
  • He tried to evade the embarrassing question.他企图回避这令人难堪的问题。
  • You are in charge of the job.How could you evade the issue?你是负责人,你怎么能对这个问题不置可否?
13 mediate yCjxl     
vi.调解,斡旋;vt.经调解解决;经斡旋促成
参考例句:
  • The state must mediate the struggle for water resources.政府必须通过调解来解决对水资源的争夺。
  • They may be able to mediate between parties with different interests.他们也许能在不同利益政党之间进行斡旋。
14 membrane H7ez8     
n.薄膜,膜皮,羊皮纸
参考例句:
  • A vibrating membrane in the ear helps to convey sounds to the brain.耳膜的振动帮助声音传送到大脑。
  • A plastic membrane serves as selective diffusion barrier.一层塑料薄膜起着选择性渗透屏障的作用。