Leukocytes (white blood cells) are found mainly in the blood, bone marrow, and lymphoid organs. The size of leukocytes varies from 7 µm for lymphocytes to 20 µm for monocytes. The life span of leukocytes ranges from a few days to several months. Leukocytes perform specific immune defense tasks and are part of the specific … Leukocytes
Lymphocytes are cellular components of the blood. They include B cells (B lymphocytes), T cells (T lymphocytes), and natural killer cells (NK cells) and belong to the leukocytes (white blood cells). The size of lymphocytes varies: small lymphocytes: 4-7 μm and medium and large lymphocytes up to 15 μm. The life span ranges from several … Lymphocytes
Basophilic granulocytes are cellular components of the blood. They are a subset of leukocytes (white blood cells) that have basophilic vesicles in their cytoplasm (total living contents of a cell). They are considered part of the nonspecific cellular immune system. Basophilic granulocytes are determined as part of the differentiation of leukocytes (see “Differential Blood Count” … Basophil Granulocytes
Eosinophil granulocytes are cellular components of the blood. They are a subset of leukocytes (white blood cells) that have eosinophilic vesicles in their cytoplasm (total living contents of a cell). They are considered part of the nonspecific cellular immune system. Eosinophil granulocytes are determined as part of the differentiation of leukocytes (see “Differential Blood Count” … Eosinophil Granulocytes
Erythrocytes (red blood cells) are the most abundant cells in the blood. The process by which erythrocytes are generated from hematopoietic stem cells of the hematopoietic bone marrow is called erythropoiesis. The production of erythrocytes is stimulated or controlled by the hormone erythropoietin (EPO). It is produced in adults predominantly by endothelial cells (specialized flat … Erythrocytes: Red Blood Cells
A blood count is the examination of the blood for its various components. The blood count is the most common blood test of all, as changes in the blood count occur in a wide variety of diseases. A small blood count can be distinguished from a large blood count, which then includes a differential blood … Complete Blood Count with Differential
Hematocrit (Hkt, Hct, or Hk) refers to the volume fraction of cellular components in the total volume of blood. Since erythrocytes (red blood cells) physiologically represent 99% of the total volume of blood cells, Hct is the percentage of the volume of all erythrocytes in the total blood. The hematocrit describes the flow behavior of … Hematocrit Facts
Hemoglobin (Hb; from Greek αἷμα haíma “blood” and Latin globus “sphere”) is the iron-containing protein complex that binds oxygen in erythrocytes (red blood cells) and gives them their red color (“blood pigment”). In healthy adults, hemoglobin consists of 98% hemoglobin A1 (α2β2) and 2% hemoglobin A2 (α2δ2). The healthy adult forms approximately 6 to 7 … Hemoglobin: What does it do?
Monocytes are cellular components of the blood. They are a subset of leukocytes (white blood cells). When they leave the circulating blood, they develop into macrophages scavenger cells). Monocytes have a diameter of about 12-20 µm. This makes them the largest cells in the circulating blood.The life span of circulating monocytes is 1-3 days; as … Monocytes
Neutrophil granulocytes are cellular components of the blood. They are a subset of leukocytes (white blood cells) and are considered part of the nonspecific innate immune system. The rod-nucleated granulocyte is the penultimate maturation stage of granulopoiesis (cellular development of granulocytes), it is characterized by a rod-shaped, unsegmented nucleus.The segment-nucleated granulocyte is the last maturation … Neutrophil Granulocytes
Reticulocytes are young, already nonnucleated precursors of erythrocytes (red blood cells). These develop from stem cells. The formation of erythrocytes occurs in the bone marrow. In pathological processes (pathological conditions), also in the liver and spleen. The procedure Material needed EDTA blood Preparation of the patient Not necessary Disruptive factors None known Standard values Age … Reticulocytes
Platelets, or thrombocytes, are solid components in the blood. At only 2-3 µm, they are the smallest cells in the blood and have an average lifespan of 8-12 days. Platelets are formed by strangulation of the megakaryocytes of the bone marrow. They have their function in hemostasis (blood clotting) by attaching themselves to the surrounding … Platelets Function