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THE BLOOD
- Immune response
- Antigens are sites on the surface of cells allowing it to be recognised by WBC's
- WBC's release antibodies
- antibodies work like enzymes ( Lock & Key)
- Causes problems with donor organs as WBC's may attack and slowly destroy it
- antibodies work like enzymes ( Lock & Key)
- Antigens are sites on the surface of cells allowing it to be recognised by WBC's
- Composition of Blood
- Plasma
- Transports materials around the body
- Transports materials around the body
- Platelets
- Clot blood
- Clotting Process
- Blood is exposed to air
- Platelets breakdown & fibrin is formed
- The fibrin forms a mesh which hardens forming a clot
- The fibrin forms a mesh which hardens forming a clot
- Platelets breakdown & fibrin is formed
- Blood is exposed to air
- Clot blood
- White blood cells
- Used during Phagocytosis
- Process of Phagocytosis
- The WBC approaches the bacterium
- it then engulfes thr bacterium
- The DNA codes for digestive enzymes
- The enzymes are released and destroy the bacterium
- The enzymes are released and destroy the bacterium
- The DNA codes for digestive enzymes
- it then engulfes thr bacterium
- The WBC approaches the bacterium
- Used during Phagocytosis
- Red blood cells
- carry oxygen
- biconcave cells containing no nucleus
- Contain haemoglobin
- carry oxygen
- Plasma
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