机体损伤后即发生一系列的止血反应,这个过程要有三种因素参加:血管、血小板、凝血因子。首先是血管收缩血流减慢,血小板粘附于损伤组织处,并聚集起来形成白色血栓,同时凝血因子开始被激活。引起一系列的反应,最终形成纤维蛋白包裹着血细胞,成为红色血栓,堵住出血口完成了止血过程。凝血因子共有13个,凝血过程可以分为三阶段,第一阶 A series of hemostatic reactions occur after the body is damaged. There are three factors involved in this process: blood vessels, platelets, and clotting factors. The first is the vasoconstriction slows down the blood flow, platelets adhere to the damaged tissue, and gathered together to form a white thrombus, while the coagulation factor began to be activated. Cause a series of reactions, the final formation of fibrin wrapped in blood cells, a red thrombus, blocking the hemostasis to complete the hemostasis process. There are 13 coagulation factors, coagulation process can be divided into three stages, the first stage