| Term | Definition |
|---|
| antecubital fossa | bend of the elbow |
| anticoagulant | chemical additive used to prevent clotting |
| additive | chemical placed in tube that maintains integrity of specimen |
| centrifuge | spins specimen at a high speed to separate elements |
| frothing | bubbling in a specimen caused by improper venapuncture |
| gauge | size of needle |
| hematoma | collection of blood outside of blood vessel - bruise |
| hemoconcentration | increased concentration of blood cells due to a decrease in plasma volume - tourniquet too tight |
| buffy coat | layer of WBCs between plasma and packed cells |
| capillary puncture | process of small incision into capillary area |
| coagulation | clotting |
| hematology | study of blood |
| hemocytometer | microscope slide used to count blood cells |
| lancet | small disposable needle, makes shallow incision into capillary area |
| micropipette | small pipette used to collect a precise amount of blood |
| morphology | study of shape or form of something |
| phagocytosis | process of engulfing and destroying bacteria by WBCs |
| phlebotomy | insertion of a needle into a vein for the purpose of drawing blood |
| pyrogen | fever producing substance released by neutrophils |
| plasma | liquid portion of blood, formed elements and dissolvable items are suspended in |
| venipuncture | puncturing vein with needle for collection of blood |
| erythrocyte | RBC, biconcave shape, holds hemoglobin, no nucleus |
| ESR | rate at which RBCs fall to bottom of specimen |
| hematocrit | percentage of RBCs compared to number of thrombocytes and WBCs |
| hemoglobin | protein found in RBCs, contains iron, allows RBCs to carry oxygen to our body |
| packed red blood cells | collection of RBCs at bottom of centrifuge specimen |
| formed elements | WBCs, RBCs, and thrombocytes |
| granular leukocyte | WBCs that contain granules in the cytoplam |
| neutrophil | granular WBC, stains neutral in color, aids in phagocytosis for bacterial infections |
| eosinophil | granular WBC, stains a rosy color, increases with allergic reactions |
| basophil | granular WBC, stains blue, increases with allergic reactions, releases heparin and histamine |
| agranular leukocyte | WBC without granules |
| monocyte | phagocytic in nature, kidney bean nucleus, agranular WBC |
| lymphocyte | WBC, no granules, large nucleus, increases with viruses |
| T-lymphocyte (killer T-cell) | phagocytic WBC, kills immediate infection |
| B-lymphocyte (memory B-cell) | acts as an antibody when introduced to exact infection the T-cell originally killed |
| thrombocyte | clotting cell |
| platelet | fragment of a thrombocyte, breaks off when there's a break in the blood vessel wall, essential for clotting |
| serum | clear yellow liquid that remains after a clot comes |
| whole blood | total volume of plasma and formed elements |
| hemolysis | breaking down of RBCs and release of hemoglobin |
| hemolysis occurs when: | frothing, alcohol wet at venapuncture site, shaking instead of inverting, incomplete penetration of vein wall, too small of a gauge needle |
Combine with other sets
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