皮肤伤口愈合过程中触发一系列物理、化学、细胞学的反应。一旦这种连锁反应受到干扰 ,即会导致过度增生或瘢痕形成。愈合过程分为 4期 :( 1)血管反应期 :血管收缩减少出血 ,血小板聚集形成血凝块 ,凝血酶原激活物将凝血酶原转变为凝血酶 ,后者使纤维蛋白原转化为纤维蛋白 ,使 Skin wound healing triggers a series of physical, chemical and cytological reactions. Once this chain reaction is disturbed, it can cause hyperproliferation or scarring. The healing process is divided into 4 phases: (1) Vascular response: vasoconstriction reduces bleeding, platelets aggregate to form blood clots, prothrombin activators convert prothrombin to thrombin, which converts fibrinogen to fibrin ,Make