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Module 9 A&P
Blood
| Term | Definition |
|---|---|
| Plasma | Clear extracellular matrix, accounts for 55% of blood |
| Formed elements | Red blood cells account for most of the formed elements |
| Hematocrit | percentage of red blood cells in a sample of blood; reveals how much oxygen the blood can carry |
| Viscosity | term used to describe the thickness or stickiness of blood |
| Hemopoiesis | Production of blood |
| two types of hemopoetic tissue | Red bone marrow and lymphatic tissue |
| red bone marrow | produces all types of blood cells |
| lymphatic tissue | produces lymphocytes |
| Red blood cells | (erythrocytes) deliver oxygen to blood cells, remove carbon dioxide |
| Hemoglobin | a red pigment that gives blood its color |
| iron | oxygen carrying component of hemoglobin |
| red blood cell cycle life | 02 levels drop, kidneys secrete erythroportin, bone marrow creates erythrocytes, reticulocytes released, 02 rises,EPO and RBC go down |
| Reticulocytes | immature RBCs |
| Hemoglobin | globin and heme |
| globin | amino acids |
| heme | iron and bilirubin |
| iron is transported to bone marrow... | to create new hemoglobin |
| when destruction of red blood cells become excessive (hemolysis)... | the body cant readily assimilate the increased amounts of bilirubin causing jaundice |
| White blood cells | called leukocytes, fewest of elements formed |
| Eosinophils | involved in allergenic reactions, elevated in allergic reactions |
| Agranulocytes | has longestest life span (can live years), |
| Lymphocytes | responsible for long term immunity |
| leukemia | extremely high WBC |
| Leukopenia | Low WBC |
| Platelets | thrombocytes |
| steps of hemostasis | vascular spasm, formation of platelet plug, formation of blood clot |
| Hemostasis | formation of blood clot |
| synthesis of clotting factors requires... | vitamin K |
| Fibrinolysis | the process of clot dissolution |
| agglutinate | RBC clump together cause by reaction |
| Majority of americans have | RH positive blood |