White Blood Cells

White Blood Cells - * T cells- attack viruses, fungi,...

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blood White Blood Cells (Leukocytes) * Have nuclei * Do not contain hemoglobin * Function as part of the bodies immune system * Grouped in to * Granular leukocyte * Agranular leukocyte White Blood Cells (Leukocytes) Granular leukocytes- have large granules in their cytoplasm and have bilobed nuclei. * Three kinds * neutrophils - pale lilac-first responders to foreign invasion, phagocytic, release enzymes. * eosinophils - red orange-phagocyte, release enzymes that combat the effects inflammation in allergic reactions, and effective against parasitic infections. * basophils - blue-purple-release substances that are involved in inflammation and allergic reactions. Also called mast cells once in the tissue White Blood Cells (Leukocytes) Agranular leukocytes- cannot visible see granules (so described as agranular) * Lymphocytes - * B cell- secretes antibody that is effective in destroying bacteria and deactivating toxins
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Unformatted text preview: * T cells- attack viruses, fungi, transplanted tissue, and cancer cells * Monocytes- most important phagocytic cell. Called macrophage when enter the tissue. Emigration (Diapedesis)- the movement of cells out of the vascular system into the tissue White Blood Cells Major histocompatibility antigen- identification proteins on the cell surface of white cells and tissue cells. Differential white blood cells count- a count of the number of kinds of white cells in a sample of 100 white cells. WBC Life Span * most live only a few days as compared to the 120 days of the red cell * some B and T cells live for years Leukocytosis- increase in the number of white cells. Leukopenia- decrease in the number of white cells....
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