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Chapter 13
Blood
| Term | Definition |
|---|---|
| anemia | a deficiency of red blood cells or hemoglobin |
| basophil | the fewest of the WBC's; secretes heparin |
| coagulation | blood clotting |
| eosinophils | white blood cells that protect against parasites; also involved in allergic reactions |
| erythrocytes | red blood cells |
| erythropoietin | hormone secreted by the kidneys that stimulates the production of erythrocytes |
| fibrin | insoluble protein fibers involved in forming a blood clot |
| fibrinolysis | process of dissolution of a blood clot |
| hematocrit | the percentage of red blood cells in a sample of blood |
| hemoglobin | iron-containing pigment of red blood cells that carries oxygen |
| hemolysis | the destruction of red blood cells |
| hemopoiesis | the production of blood |
| hemostasis | an arrest of bleeding |
| leukocytes | white blood cells (WBC) |
| leukocytosis | elevated white blood cell count |
| leukopenia | abnormally low white blood cell count |
| lymphocytes | second most numerous of the WBC's; responsible for long-term immunity |
| monocytes | largest and most long-lived of the WBC's; highly phagocytic |
| neutrophils | most abundant of the white blood cells; highly mobile |
| plasma | the clear extracellular matrix of blood |
| platelets | blood cell fragments that play a key role in stopping bleeding |
| reticulocytes | an immature form of an erythrocyte |
| serum | plasma without the clotting proteins |
| viscosity | the thickness or stickiness of blood |