Question

which step of hemostasis involves activation of formed elements in the blood?
A. vascular spasm
B. fibrin mesh formation
C. platelet plug formation
D. fibrinolysis

Answer 1

Answer : b) fibrin mesh formation

Hemostasis is the process by which the body prevents leakage of blood from blood vessels. It involves three stages:

1. Vascular spasm : in this stage, the blood vessel constricts. This reduces the amount of blood flow in the damaged area and reduces blood loss.

2. Platelet plug formation : In this stage, the platelets in the blood form a plug over the affected area thereby blocking the blood from leaving the vessel.

3. Fibrin mesh formation: This is the final stage where elements in blood called fibrin are activated and they clot the blood at the leakage site.