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Blood. Chapter 10. Composition of Blood. Anemias. Blood Cell Development. Regulation of RBC Formation. Hemostasis. Vascular Spasms –smooth muscle in wall of vessel contracts Platelet Plug Formation –exposed collagen from basement layer of vessel causes platelets to become sticky
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Blood Chapter 10
Hemostasis • Vascular Spasms –smooth muscle in wall of vessel contracts • Platelet Plug Formation –exposed collagen from basement layer of vessel causes platelets to become sticky • Coagulation: • Injured tissues release tissue factor (TF) • TF interacts with phospholipids of platelet membrane and clotting factors circulating in blood to form Thrombin • Thrombin and fibrin join together to form clot • Fibrin strands retract releasing serum, pulling edges of vessel together