血小板是一种无核的细胞碎片,来自骨髓的巨核细胞浆。血小板通过在损伤的血管壁上形成初期止血栓,并和凝血系的某些成份相互作用而起止血功效。即血小板粘附于受损血管壁所暴露出的内皮下胶原组织形成血小板团块(聚合物),以及血小板为一些凝血反应提供磷脂蛋白催化的表面(血小板3因子)。 Platelets are a kind of non-nuclear cell debris that comes from the megakaryocyte cytoplasm of the bone marrow. Platelets play a hemostatic function by forming initial antithrombotic vessels on the damaged vessel wall and interacting with certain components of the coagulation system. That is, platelets adhere to the subendothelium collagen membrane exposed to the damaged vessel wall to form platelet aggregates (polymers), and platelets provide phospholipid-catalyzed surfaces (platelet 3 factor) for some coagulation reactions.