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Chap 13 MedTerm
The Blood System
| Question | Answer |
|---|---|
| Hematopoietic Stem Cell | cell in the bone marrow that gives rise to all types of blood cells |
| Reticulocyte | an immature red blood cell |
| Erythrocytes | red blood cell |
| Characteristics of RBC's- Erythrocytes | Anuclear, Biconave, Red pigment heme, carry oxgyen, filled with hemoglobin, flexible, travel sing file through the capillaries |
| erythropoietin mechanism | |
| How many RBC's in a cubic millimeter of blood? | 5 million |
| How long does a RBC live? | 120 days |
| How many hemoglobin molecules are in a single RBC? | 250,000,000 |
| Sider/o? | iron |
| How many RBC destroyed per second? | 2.4X10^6 |
| Bilirubin | Orange yellow pigment formed from destruction of hemoglobin |
| What happens to all that hemoglobin? | Excreted by liver in bile, reused or stored in live spleen, or bone marrow |
| Neutrophil | leukocyte formed in bone marrow and having neutral staining granules |
| eosinophil | leukocyte with dense, reddish granules; associated with allergic reactions |
| neutrophil | white blood cell that destroys foreign material by phagocytosis, fighting bacterial infection |
| lymphocyte | leukocyte formed in lymph tissue; produces antibodies |
| leukocytes | neutrophil, eosinophil, monocyte, large lymphocyte |
| phagocyte | eats bacteria |
| eosinophil | fights against allergies and patastic infections, phagocyte |
| monocyte | become marcophages, large phagocytes, eats tissue debris |
| platelets | clotting mechanism |
| plasma | liquid portion of blood |
| lymphocyte | controls the immune response; makes antibodies to antigens (immunoglobulins) |
| four major proteins | albumin, globulins, fibrinogen and prothrombin (the last two are clotting proteins) |
| albumin | plasma protein that maintains the proper amount of water in blood (blood protein) |
| globulins | protein in plasma; can be separated into alpha, beta, and gamma types |
| fibrinogen & prothrombin | clotting process |
| Blood types: | TYPE A, TYPE B, TYPE AB, and TYPE O |
| which type is the universal donor? | Blood type O, important of maintaining the blood, most common blood type ANTI A and ANTI B |
| hemolytic disease of the newborn? | 1. mother and baby's blood mixes during birth, 2. antibodies against Rh+ blood are formed by the mother, 3. mother's antibodies destroys (lyse) the second baby's blood |
| fibrin clot | |
| Abnormalities of RBC: anisocytosis | cells are unequal in size |
| Abnormalities of RBC: hypochromia | cells have reduced color (less hemoglobulin) |
| Abnormalities of RBC: macrocytosis | cells are large |
| Abnormalities of RBC: microcytosis | cells are small |
| Abnormalities of RBC: poikilocytosis | cells are irregularly shaped |
| Abnormalities of RBC: spherocytosis | cells are spherical (loss of normal concave shape) |
| anemia | deficiency in erythrocytes or hemoglobin |
| aplastic anemia | failure of blood cell production in the bone marrow |
| sickle cell | hereditary disorder of abnormal hemoglobin producing sickle shaped erythrocytes and hemolysis |
| thalassemia | inherited disorder of abnormal hemoglobin production leading to hypochromia |
| pernicious anemia | lack of mature erythrocytes caused by inability to absorb vitamin B12 into the bloodstream |
| hemolytic anemia | reduction of red cells |
| siderpenia anemia | |
| polycythemia VERA PV | increased red blood cells |
| Cause of sickling | low O2 |
| Hemophilia | excessive bleeding caused by hereditary lack of VIII and IX necessary for blood clotting |
| purpura | multiple pinpoint hemorrhages; blood accumulates under the skin |
| thrombocytopenia | deficiency of clotting cells |
| acute leukemia | |
| leukemia | ACUTE: Sudden onset of immature leukocytes - most often seen in children CHRONIC: Progresses slowly over time - mature lymphocytes most often seen in adults |
| mononucleosis | caused by EBV Epstein Barr virus - carried and transmitted by saliva, infectious disease marked by increased numbers of mononuclear leukocytes and enlarged cervical lymph nodes |