The photomicrograph shows two blood cells. What is the function of these cells?

9.4.1 List the components of blood as red blood cells, white blood cells, platelets and plasma

9.4.2 Identify red and white blood cells, as seen under the light microscope, on prepared slides and in diagrams and photomicrographs

9.4.3 State the functions of the following components of blood

9.4.4 Identify lymphocyte and phagocyte white blood cells, as seen under the light microscope, on prepared slides and in diagrams and photomicrographs

9.4.5 State the functions of: – lymphocytes – antibody production – phagocytes – phagocytosis

9.4.6 Describe the process of clotting as the conversion of fibrinogen to fibrin to form a mesh

9.4.7 State the roles of blood clotting as preventing blood loss and preventing the entry of pathogens

9.4.8 Describe the transfer of materials between capillaries and tissue fluid (details of the roles of water potential and hydrostatic pressure are not required)