Blood Components: Questions and Answers
1 - Blood Components: Questions and Answers introduction. ) Significance of a lower-than-normal hematocrit? -means your body is not fighting off something, but puts you at risk for problems with bone marrow or puts you at risk for a bacterial infection. anemia What is the effect of a bacterial infection on the hematocrit? -raises them 2). Development of lymphocytes with the development of the other formed elements -B lymphocytes develop in red bone marrow, T lymphocytes develop in red bone marrow and mature in the thymus; the other formed elements develop in red bone marrow
3. ) Erythropoiesis? the production of RBCs Which factors speed up and slow down erythropoiesis? -when oxygen delivery to the kidneys falls and slows down when there is sufficient oxygen-carrying capacity of the blood 4. ) What happens if a person with type B blood gets type O? -nothing 5. ) Name and function of ea. WBC? a. WBC has a round nucleus surrounded by a blue halo of cytoplasm with no visible granules. b. WBC contains dense blue-purple granules that hide the nucleus. c. WBC has a U-shaped nucleus and a bluish, foamy cytoplasm with no visible granules. d.
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WBC contains small, pale lilac granules and a four-lobed nucleus. e. WBC contains red-orange granules and a two-lobed nucleus. a) lymphocyte – major combatant in immune responses b) basophil – intensifies the inflammatory reaction, is involved in hypersensitivity reactions c) monocyte – phagocytosis and cell debris cleanup d) neutrophil – active in phagocytosis e) eosinphil – releases enzymes that combat the effects of histamine and other mediators of inflammation in allergic reactions, phagocytize antigen-antibody complexes, are effective against certain parasitic worms . ) Level of leukocytes higher when infected with a parasitic disease? -The presence of the parasitic microorganisms trigger an immune response in the body of the infected individual.
The leukocytes are then produced in large amounts in order to protect the body. The leukocytes(or white blood cells) are of several types and they are involved in secreting antibodies (which are chemicals destroying any pathogens), in killing any infected cells of the body and so on. 7. ) Which WBC’s responsible for immune response against pathogens? -leukocytes How do they function? attack invaders especially ones already acquainted 8. ) Function of prothrombinase and thrombin in clotting? -prothrombinase: converts prothrombin into the enzyme thrombin; thrombin; converts soluble fibrinogen into insoluble fibrin Extrinisic and Intrinsic pathways of blood clotting differ? -The extrinsic pathway occurs very rapidly with a tissue protein leaking into the blood from damaged tissues outside the blood vessels; the intrinsic pathway is more complex, occurs more slowly, and its activators are either in direct contact with blood or contained within the blood