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• white blood cells defend against infection
• phagocytosis- the process of (white blood cells) engulfing and digesting unwelcome microorganisms
• white blood cells produce antibodies to destroy pathogens and antitoxins to neutralise toxins
• white blood cells have a nuclious
• how white blood cells defend:

  • phagocytosis
  • produce antibodies
  • produce antitoxins
• platelets help blood clot
• plasma is the liquid that carries everything in blood
• plasma is a pale straw coloured liquid
• plasma carries:

  • red blood cells
  • white blood cells
  • nutrients like glucose and amino acids
  • carbon dioxide
  • urea
  • hormones
  • proteins
  • antibodies and antitoxins