Clinical pathology supports the diagnosis of disease using laboratory testing of blood and other bodily fluids, tissues, and microscopic evaluation of individual cells. Hematology is the study of blood in health and disease. It includes problems with the red blood cells, white blood cells, platelets, blood vessels, bone marrow, lymph nodes, spleen, and the proteins involved in bleeding and clotting (hemostasis and thrombosis). Blood banking refers to the process of collecting, separating, and storing blood.
Anatomy is the study of the structure and relationship between body parts. Physiology is the study of the function of body parts and the body as a whole. Modern medical science is growing day by day. The volume of information available is huge. Detailed knowledge of the normal functions of living providing a firm foundation. Knowledge of the structure becomes an essential base to understand the functions better. Keeping in mind the close connection between the structure and functions we have tried to integrate Anatomy and Physiology in the first part of this book. Medical professionals are faced with challenges of handling infected persons as part of their practice. They face the threat of dealing with infections which do not have a satisfactory cure.