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Chapter 11. Toxic Responses of the Blood
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Which of the following statements is FALSE regarding true anemia?
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a. Alterations of the mean corpuscular volume are characteristic of anemia.
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b. Increased destruction of erythrocytes can lead to anemia.
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c. Decreased production of erythrocytes is not a common cause of anemia because the bone marrow is continuously renewing the red blood cell pool.
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d. Reticulocytes will live for a longer period of time in the peripheral blood when a person is anemic.
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e. The main parameters in diagnosing anemia are RBC count, hemoglobin concentration, and hematocrit.
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Which of the following types of anemia is properly paired with its cause?
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a. iron deficiency anemia—blood loss.
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b. sideroblastic anemia—vitamin B12 deficiency.
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c. megaloblastic anemia—folate supplementation.
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d. aplastic anemia—ethanol.
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e. megaloblastic anemia—lead poisoning.
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The inability to synthesize the porphyrin ring of hemoglobin will most likely result in which of the following?
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a. iron deficiency anemia.
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c. inability to synthesize thymidine.
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d. accumulation of iron within erythroblasts.
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e. bone marrow hypoplasia.
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Which of the following will cause a right shift in the oxygen dissociation curve?
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b. decreased carbon dioxide concentration.
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c. decreased body temperature.
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d. increased 2,3-BPG concentration.
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All of the following statements regarding erythrocytes are true EXCEPT:
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a. Aged erythrocytes are removed by the liver, where the iron is recycled.
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b. Erythrocytes have a life span of approximately 120 days.
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c. Red blood cells generally lose their nuclei before entering the circulation.
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d. Reticulocytes are immature RBCs that still have a little RNA.
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e. Persons with anemia have a higher than normal reticulocyte:erythrocyte ratio.
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All of the following statements regarding oxidative hemolysis are true EXCEPT:
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a. Reactive oxygen species are commonly generated by RBC metabolism.
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b. Superoxide dismutase and ...