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8 main functions of blood


Transport: to and from tissue cells• Nutrients to cells: amino acids, glucose, vitamins, minerals, lipids (as lipoproteins).• Oxygen: by red blood corpuscles (oxyhaemoglobin - 4 x O2 molecules/haemoglobin).• Wastes from cells: urea, CO2 (mainly as HCO3- in solution in the plasma).Temperature Regulation: by altering the blood flow through the skin.Immunity: protection against pathogens — blood clotting; phagocytes, lymphocytes and antibodies distributed in blood.Communication: hormones distributed to all parts of the body in the blood.Defence: clotting following a woundComposition


carries oxygen in red blood cells

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