thromboplastin
thromboplastin (tissue factor; Factor III) A membrane glycoprotein expressed on the surface of damaged tissue cells that initiates the cascade of reactions leading to formation of a blood clot. It forms a complex with Factor VIIa in the presence of phospholipid and calcium ions; this complex converts Factor X to Xa, which in turn converts prothrombin to thrombin. See blood clotting.
thromboplastin
thromboplastin One of a group of lipoprotein compounds apparently released by blood platelets at the site of an injury. In the presence of calcium ions and other factors, it catalyses the conversion of prothrombin into thrombin during the clotting of blood.
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Blood Clotting , Blood clotting (coagulation) is the process by which blood vessels repair ruptures after injury. Injury repair actually begins even before clotting d… Clotting Factors , Clotting is the process that changes blood in the body from a free-flowing liquid into a thick, jellylike substance that stops bleeding.
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thrombin A proteolytic enzyme, involved in the clotting of blood, that is generated by the conversion of its zymogen prothrombin, the proces… Transfusion , Transfusion
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Thromboplastin