This diagram covers Blood Clotting Process within Blood Components and Vessels for GCSE Biology. Blood composition, red and white blood cells, platelets, plasma, blood vessel structure and function, adaptations for transport It is section 3 of 16 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.
Blood Clotting Process
1. Vessel Damage
Blood vessel wall is cut or damaged, exposing underlying tissues
2. Platelet Activation
Platelets stick to damaged area and become activated, changing shape and releasing chemicals
3. Platelet Plug Formation
More platelets aggregate at site, forming temporary plug to reduce blood loss
4. Fibrin Formation
Clotting cascade converts fibrinogen to fibrin threads that strengthen the clot
5. Clot Stabilization
Fibrin mesh traps blood cells, forming stable clot that stops bleeding
Practice questions for Blood Components and Vessels
What is the main function of red blood cells?
Explain how red blood cells are adapted for their function of transporting oxygen.