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Blood II L.O: To explain what blood transports What is in blood? • Red blood cells, white blood cells platelets and plasma – what do these do? • RBC – O2 • Plasma –CO2, soluble food, waste material(urea) • Platelets – clots blood at area of cut • WBC antibody production and phagocytosis Red blood cells • Contain haemoglobin – protein containing iron that picks up O2 when RBC pass through lungs • Adaptations – no, nucleus, haemoglobinhigh affinity for O2 • Becomes oxyhaemoglobin • Oxygen + haemoglobin oxyhaemoglobin • Oxygen is released at cells for respiration • Oxyhaemoglobin Oxygen + haemoglobin Transport of urea • Toxic chemical formed from the breakdown of proteins • Made in liver and excreted through kidneys • Transported in plasma • Diagram Transport of food • Glucose, amino acids and other water soluble substances transported in plasma • What cannot be transported in plasma? • Fats-transported in lymphatic system • Diagram