These are simplified slides discussing the functions of white blood cells. Learning objectives: 1. Discuss the genesis of white blood cells 2. Describe the morphology and physiology of different types of white blood cells 3. Elucidate the phagocytic potential and mechanisms of neutrophils and macrophages 4. Appraise the clinical significance of RES reticuloendothelial system 5. Recognise the specific immune functions of lymphocytes, eosinophils and basophils 6. Describe pathophysiology of inflammation and necrosis 7. Comment on leukopenia and leukemia Study Resources: 1. Chapter 34, Guyton and Hall Textbook of Medical Physiology, 14th edition 2. Chapter 11, Human Physiology From Cells to System by Lauralee Sherwood, 9th edition 3. Chapter 3, Ganong’s Review of Medical Physiology, 26th edition 4. Physiology, Immune Response – StatPearls; https://www.ncbi.nlm.nih.gov/books/NBK539801/