Blood Components

• Components of blood: Red, White, Platelets and Plasma.

  
• Plasma is a liquid that carries the blood components. Including urea, hormones and Co2.

  
• Red Blood cells carry oxygen from blood to lungs.

  
• Red bloods cells have a biconcave disk shape (Large surface area). No nucleus (more room for oxygen). Haemoglobin (red colour).

  
• White Blood cells are apart of the Immune system and are the bodys defence.

  
• White blood cells have a nucleus. They produce antitoxins, antibodies and engulf pathogens.

  
• Platelets is a small fragment of cells that form blood clots on wounds. Clot dries and forms a scab and new skin.

  
• When a white blood cell engulfs pathogens it is called Phagocytosis
• White blood cells release chemicals called antibodies to destroy pathogens.