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37 Cards in this Set
- Front
- Back
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plasma
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non-living fluid matrix
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formed elements
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living cells
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Leukocytes
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white blood cells- non-specific defense and immune system
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platelets
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functions in blood clotting
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hemocytoblasts
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stem cells in the bone marrow that form RBC and WBC
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diapedesis
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the ability of WBCs to move in and out of blood vessels
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amoeboid motion
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ability of WBCs to wander through body tissues
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granulocytes
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WBCs are divided into 2 groups, this group contains granules in the cytoplasm. 3 types in this group are eosinophils, neutrpphils, and basophil
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neutrophils
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most abundant WBC. Functions as an active phagocyte. Takes in red and blue dyes. hint-neutral loving
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eosinophil
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contains large cytoplasmic granules. Same size of neutrophils. Play a role in counterattacking parasitic worms
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basophil
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least abundant leukocyte. U or S shaped nucleus. Large course granules stain deep purple. Contain histimine vasodilator
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agranulocytes
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leukocyte group- do not contain visible cytoplasmic granules. nuclei closer to the norm
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lymphocyte
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smallest leukocyte concerned with immunologic responses in the body. "b" and "t" types.
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monocyte
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largest leukocyte. Stains gray blue. in tissue monocytes convert to macrophages, active phagocytes. increasing during chronic infections
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megakaryocytes
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multinucleated bone marrow cells. Responsible for the production of thrombocytes
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total white blood count
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total number of WBCs per unit volume of blood.
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leukocytosis
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abnormally high WBC count may indicate bacterial viral infection, metabolic disease, hemorrhage, or poisoning
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leukopenia
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decrease in WBC below 4000m/m3. may mean typhoid fever, measles, infectious hepatitis cirrhosis, tuberculosis, excessive antibiotics or Xray therapy
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leukemia
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lymphoid tissues characterized by uncontrolled proliferation of abnormal WBCs with a decrease of RBCs and platelets
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total RBC count
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number of RBCs in a unit of blood
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polycythemia
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increase in number of RBCs may be a result of living in high altitude, bone marrow cancer
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anemia
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a decrease in RBCs, decreased oxygen carrying capacity
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erythrocytes
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red blood cells sacs of hemoglobin molecules
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hematocrit
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Packed Cell Volume- considered more accurate test than the total RBC count for determining the RBC composition of the blood
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bleeding time
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how long it takes for a wound/ open cut to stop bleeding
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blood clotting
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coagulation- protective mechanism, minimizes blood loss when blood vessels are ruptured. process requires interaction of many substances
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Tissue factor & PF3
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injured tissues and platelets release this. they react with each other and other clotting factors and calcium ions.
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1st Major event of coagulation
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formation of prothrombin activator by Pf3 and tissue factor & calcium ions
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2nd major event of coagulation
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prothrombin activator turns into prothrombin then into thrombin
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3rd major event of coagulation
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thrombin acts on fibrinogen and polmerizes the soluble, into the insoluble fibrin
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blood typing
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sytem of blood classification based on the presence of specific glycoproteins on the outer surface of the RBC plasma membrane
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antigens/ agglutinogens
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genetically predetermined, specific glycoproteins found on the RBC plasma membrane
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anitbodies
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agglutinins- plasma proteins that react with RBCs bearing different antigens, causing them to clump, agglutinate and eventually hemolyze
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atherosclerosis
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a disease process in which the body's blood vessels become increasingly occluded by plaques
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thrombi
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blood clots
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high-density lipoproteins HDL
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"good cholesterol" big enough to be carried to the liver and then degraded and disposed of
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Low-density lipoproteins LDL
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"bad cholesterol" travels to the body's tissue cells, if too much will be deposited in the blood vessel walls
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