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Blood By Gary Jones Components of the blood. Plasma 55% A straw coloured solution, that is responsible for transporting various substances around the body. These include Glucose, Mineral ions, Proteins and Hormones. Cells 45% ( listed below) Erythrocytes ( red blood cells) These are the most numerous of the cells in the blood. In adult blood there are 5 000, 000 per mm3. They transport the oxygen and the carbon dioxide, and contribute to the buffering capacity of the blood. They are red in colour due to the haemoglobin pigment that they contain. Platelets ( Thrombocytes) These are fragments of cells that are involved in the clotting of the blood. Neutrophils ( White blood cells) These are the most abundant of the leucocytes. They have a very short life span of 12 to 72 hours. They contain non-staining granules, and are responsible for the phagocytosis of micro-organisms. They migrate from the blood to the tissues, and are...

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