order of events for blood clotting response

Question 1

order of events for blood clotting response

Answer 1

1. blood vessel is broken
2. in area around cut, vasoconstriction restricts blood flow
3. platelets in the blood stick to damaged tissue, forming platelet plug
4. platelets produce signaling molecules to attract more platelets. release clotting factors to convert prothrombin to thrombin
5. thrombin converts soluble protein fibrinogen into insoluble form called fibrin
6. fibrin proteins are like tiny strings that form a mesh over the platelet plug which traps cells and liquid
7. mesh becomes so thick it traps everything. when exposed to air becomes so dry, causes a scab