erythrocytes: Red Blood cells Leacocytes: White blood cells, Thrombocytes platelets
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Platelets
Very small non-nucleated discs-2-4 microns in diameter formed from megakaryocytes in red bone marrow. Functional in blood clotting. Life span-8-11 days.
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Erythrocytes
Biconcave, non-nucleated discs(7 microns in diamter) containing the iron based blood pigment haemoglobin. Shape is closely related to function. Formed by haemopoiesis in the red marrow. Life spand 120 days in primates. Transport of oxygen from lungs
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Leucocytes-White blood cells
Leucocytes are the largest blood cells, 1% of blood volume, defend body against microbes, contain nuclei, granules in cytoplasm.
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Leucocytes
Granulocytes- contain multi-obed nuclei and granules in cytoplasm, formed by granulopoiesis, named according to dyes
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Granulocytes- Three main types
Eosinophils, Basophils, Neutrophils
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Eosinophils
Stain with red acid stain eosin
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Basophils
Stain with alkaline methylene blue
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Neutrophils
- Stain purple sine they stain with eosin and methylene blue
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Agranulocytes
Contain large nucleus, no granules, 25-50% of all leucocytes, two main types of Agranulocyte
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