Hematology is a science that deals with blood (blood cells). The term "hematology" has its origins in Greek words haima (blood) and logos (science), and was called into use for the first time in 1743.
Blood is the red fluid circulating through blood vessels and is an essential power system in our body. It consists of a pale yellow liquid, the plasma (55% of the blood volume), and blood cells (45% of the blood volume). The cells are the erythrocytes (or red blood corpuscles), the leukocytes (cells with nuclei), and the thrombocytes (blood platelets).
Blood cells, which wear themselves out in excessive quantities, make a unique hematopoietic system, together with the tissues in which they are formed. The basic organ of hematopoesiesis is the bone marrow. Along with the bone marrow, the thymus, lymph nodes, and the spleen are the parts of the hematopoietic tissue.
The cells remain in blood for some time. The value of their permanency refers to the fact that the quantity of formed cells is evenly balanced with the quantity of damaged cells.
The chapter of Generally Hematology of the CD Laboratory Hematology includes the following chapters:
HEMATOPOIESIS - Blood forming organs are presented; the blood marrow with a stem cell description, thymus, lymph nodes, lymphatic nodule and spleen. In this chapter characteristics of blood cells (size, nucleus and cytoplasm) and their maturation are described as well.
 ERYTHROCYTES - The introduction describes their functions, and the role of hemoglobin and factors of erythrocytopoiesis. Further chapters deal with normoblastic and megaloblastic erythrocytopoiesis as well as alternations of coloration, size, and shape of erythrocytes. The presence of inclusion bodies and erythrocytes with nuclear remnants are described. The account of all these shapes of erythrocytes includes cells description with their meaning. Variations of the same cell are described as well as similarities which might cause missinterpretation.
LEUKOCYTES - The introduction describes the function, developed forms and disturbances of granulocytes, monocytes, lymphocytes, and plasma cells. All pages of the Atlas contain variations of the same cell along with a detailed cell description, as well as possible similarity with other cells. The Atlas offers the possibility of recognizing cells according to characteristics, using the system of elimination according to characteristics - nucleus appearance, chromatin in nucleus, the presence of nucleoli, the color of cytoplasm, and the presence of granules in the cytoplasm.
THROMBOCYTES - The introduction describes their metabolism, function, and developed forms of thrombocytes. Qualitative and quantitative disturbances are also described. |
Home 
