chapter 20 white blood cells

chapter 20 white blood cells - White Blood Cells Also...

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White Blood Cells Also called leukocytes Do not have hemoglobin Have nuclei and other organelles WBC functions – Defend against pathogens – Remove toxins and wastes – Attack abnormal cells
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White Blood Cells WBC Circulation and Movement – Most WBCs in Connective tissue proper Lymphoid system organs – Small numbers in blood 5000 to 10,000 per microliter
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White Blood Cells WBC Circulation and Movement – Characteristics of circulating WBCs Can migrate out of bloodstream Have amoeboid movement Attracted to chemical stimuli ( positive chemotaxis ) Some are phagocytic: neutrophils, eosinophils, and monocytes
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