blood

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  • BLOOD!
    • ERYTHROCYTE
      • biconcave disc with large surface area.
      • carries oxygen and carbon dioxide in its haemaglobin.
      • break down of nucleus occurs in bone marrow.
    • NEUTROPHIL
      • most common white blood cell.
      • granular cytoplasm and englufs microorganisms.
    • LYMPHOCYTE
      • two types (b and t)
      • large  nucleus and clear cytoplasm
      • produce anti-bodies
    • MONOCYTE
      • biggest white blood cell
      • clear cytoplasm and large bean shape nucleus.
      • mature in the blood and move into tissue.
    • PLATELETS
      • fragments of giant megakaryocytes.
      • used to help the blood clot.
    • MACRPHAGE
      • matured cellis in the tissue
      • engulf microorganisms by phagocytosis.
    • MICROSCOPES
      • LIGHT MICROSCOPE
        • cheap and easy
        • Wave lenght = 400-700nm
        • low resolution and magnification
        • no vacume
        • used for dead or living samples
      • ELECTRON MICROSCOPE
        • high magnification and resolution
        • wave length = 0.004nm
        • uses a vacume
        • only dead specimin

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