What is the process of hemostasis?

coagulation，thrombosis，hemostasis

Physiological hemostasis is one of the important protective mechanisms of the body. When a blood vessel is damaged, on the one hand, it is required to form a hemostatic plug quickly to avoid blood loss; on the other hand, it is necessary to limit the hemostatic response to the damaged part and maintain the fluid state of the blood in the systemic blood vessels. Therefore, physiological hemostasis is the result of a variety of factors and mechanisms interacting to maintain a precise balance. Clinically, small needles are often used to puncture the earlobe or fingertips to allow the blood to flow out naturally, and then measure the duration of bleeding. This period is called bleeding time (bleeding time), and normal people do not exceed 9 minutes (template method). The length of bleeding time can reflect the state of physiological hemostatic function. When the physiological hemostatic function is weakened, hemorrhage tends to occur, and hemorrhagic diseases occur; while the overactivation of the physiological hemostatic function can lead to pathological thrombosis.