Chapter 17

An increase in the number of leukocytes in the circulating blood

A cell that can engulf or devour bacteria, foreign matter, or other cells

A decrease in the number of leukocytes in the circulating blood

Engulfs foreign matter Produces antibodies

Granulocyte: presence of granules in cytes A) neutrophils: stain in neutral fashion B) basophils: stain basic C) eosinophils: stain acidic Agranulocyte:no granules in cyte Monocytes Lymphocyte

Minutes to years

Thousands/microliter

89% of total granulocytes Most important white blood cell for fighting acute infection Pass through capillary pores by diapedesis Exhibit ameboid motion in tissue Phagocytize foreign particles Average of 20-25 bacteria removed by each neutrophil

10% of granulocytes Behaves similarly to neutrophils Numbers increase during allergic reactions Primarily detoxify foreign proteins Numbers increase with some parasites Lowered eosinophil counts have been associated with stress

Approximately one percent or less of granulocytes Little or no phagocytic action Prevents intravascular blood coagulation Prevents blood and lymph stasis during inflammation Contains heparin (anticoagulant) Vasoconstrictor (histamine)

Originate in bone marrow Large size Superior phagocytic properties Predominant during chronic infection After moving to tissue...converted to macrophages

Formed in lymph nodes Can revert to monocytes, hemocytoblast, fibroblast Can form and secrete antibodies b form: produces antibodies T form: fights viral infections

Abnormal growth and development of white blood cells Leukemoid reaction: UNDER abundance of neutraphis WBC chronic lymphocytic leukemia: over abundance of neutraphis WBC

Too few WBC

Fragments produced from megakaryocytee Makes sure body has zero leakage Plugs hole when bruised Too many platelets causes clots Too few causes hemeridge