Main objective of this lecture is to present on Components of Blood. The main components of blood include: Plasma, Red blood cells, White blood cells and Platelets. Here briefly present on what is blood made up of. Plasma is the liquid part of the blood which carries everything else. Plasma is a straw-yellow colored liquid. Finally describe on what is the job of red blood cells. Red blood cells have a round, flat disc shape for a large surface area. They contain haemoglobin which combines with oxygen in areas of high concentration to form oxyhaemoglobin.