contact activation

contact activation
initiation of the intrinsic pathway of coagulation through interaction of factor XII with various electronegative surfaces, such as collagen fibers, skin, or sebum in vivo, or particulate silicates in vitro.

Medical dictionary. 2011.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • contact activation product — a product of the interaction of blood coagulation factors XII and XI, which functions to activate factor IX …   Medical dictionary

  • activation — (of egg) Normally brought about by contact between spermatozoon and egg membrane. Activation is the first stage in development and occurs independently of nuclear fusion. The first observable change is usually the cortical reaction that may… …   Dictionary of molecular biology

  • Energie d'activation — Énergie d activation variation de l énergie au cours de la réaction chimique, barrière énergétique et enthalpie de réaction (exemple de la combustion du méthane dans le dioxygène) L énergie d activation est la quantité d énergie nécessaire pour… …   Wikipédia en Français

  • Énergie d'activation — variation de l énergie au cours de la réaction chimique, barrière énergétique et enthalpie de réaction (exemple de la combustion du méthane dans le dioxygène) L énergie d activation est la quantité d énergie nécessaire pour lancer un processus… …   Wikipédia en Français

  • Oocyte activation — Oocyte (or ovum/egg) activation is a series of processes that occur in the oocyte after fertilisation. Sperm entry causes calcium release into the oocyte. In mammals, this has been proposed to be caused by the introduction of phospholipase C… …   Wikipedia

  • Egg activation — After the fusion of the sperm plasma membrane and the egg plasma membrane after fertilization, animal eggs go through a process called egg activation to prepare the egg for development.There are three functions of egg activation: # Block to… …   Wikipedia

  • Manual fire alarm activation — Single action pull station. A manual call point in the UK …   Wikipedia

  • Coagulation — This article is about blood clotting. For other meanings see Coagulation (disambiguation). Coagulation is a complex process by which blood forms clots. It is an important part of hemostasis, the cessation of blood loss from a damaged vessel,… …   Wikipedia

  • Apolipoprotein H — (Apo H), previously known as (β2 glycoprotein I, beta 2 glycoprotein I), is a multifunctional apolipoprotein. One of its functions is to bind cardiolipin. When bound the structure of cardiolipin and Apo H both undergo large changes in… …   Wikipedia

  • High-molecular-weight kininogen — (HMWK), also known as the Williams Fitzgerald Flaujeac factor or the Fitzgerald factor or the HMWK kallikrein factor, is a protein from the blood coagulation system as well as the kinin kallikrein system. It is a protein that adsorbs to the… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”