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In a centrifuged sample of blood, what should NOT be in the plasma portion of the sample? platelets |
platelets |
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Which of the following is NOT a function of blood? distribution |
hormone production |
|
Athletes who choose to use industry-produced EPO as a performance-enhancing drug to increase the effects of their naturally-produced EPO, will experience ______. -decreased production of EPO by their kidneys |
decreased production of EPO by their kidneys |
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Which of the formed elements is present in the greatest concentration? agranular leukocytes |
erythrocytes |
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Which of the following is NOT a functional characteristic of leukocytes? positive chemotaxis |
leukocytosis |
|
Which leukocyte might you expect to find in higher quantities in a person experiencing allergies? neutrophil |
eosinophil |
|
Mature erythrocytes lack a nucleus. |
True |
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Choose the statement that is true concerning hemoglobin. -It is composed of four protein chains and four heme groups. |
It is composed of four protein chains and four heme groups |
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Which of the following does NOT stimulate erythrocyte production? erythropoietin |
hyperventilating |
|
Bilirubin is created when red blood cells are recycled. How is it removed from the blood stream? the liver |
the liver |
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Which of the following is correctly matched? -hemorrhagic anemia: red blood cells rupture |
pernicious anemia: results from a vitamin B12 deficiency |
|
Abnormally low levels of erythrocytes caused by excessive bleeding is called______. sickle-cell anemia |
hemorrhagic anemia |
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On a blood smear slide prepared using Wright’s stain, you observe a large cell with a U-shaped nucleus and pale blue cytoplasm. This cell is most likely a(n) __________. lymphocyte |
Monocyte |
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Which of the following scenarios could result in HDN (hemolytic disease of the newborn)? |
B- female pregnant with an AB+ baby |
|
Choose the incompatible transfusion. -Donate type B blood to a recipient with type O blood. |
Donate type B blood to a recipient with type O blood. |
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When a person has an acute bacterial infection, such as bacterial meningitis or appendicitis, which type of leukocyte increases in number? basophils |
neutrophils |
|
Which type of leukocyte is responsible for antibody production? monocytes |
lymphocytes |
|
Which of these develops from lymphoid stem cells? monocytes |
lymphocytes |
|
From which cell do the granulocytes descend? monoblast |
myeloblast |
|
What part of the pathway to produce platelets is shared with other formed elements? -hematopoietic stem cell (hemocytoblast) |
hematopoietic stem cell (hemocytoblast) |
|
What triggers erythropoietin (EPO) production to make new red blood cells? reduced availability of oxygen |
reduced availability of oxygen |
|
Which part of the hemoglobin molecule binds carbon dioxide for transport? heme group |
amino acids of the globin |
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What part of the body does erythropoietin (EPO) target to increase erythropoiesis? lungs |
bone marrow |
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What part of the hemoglobin molecule is eventually metabolized to stercobilin in the feces? transferrin |
a portion of the heme group |
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What erythrocyte production disorder results from an autoimmune disease associated with vitamin B12 absorption? renal anemia |
pernicious anemia |
|
What protein involved in coagulation provides the activation for the final step in clotting? prothrombin activator |
thrombin |
|
All lymphocytes are also leukocytes. |
True |
|
What factor stimulates platelet formation? erythropoietin |
thrombopoietin |
|
Which of the following represents a difference between extrinsic and intrinsic blood clotting pathways? -One involves calcium ions, while the other does not. |
One is faster than the other |
|
During which event of hemostasis do clotting factors (procoagulants) assist with the transformation of blood from a liquid to a gel? |
D: The gelling of blood due to formation of insoluble fibrin occurs during the coagulation stage. |
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What "clot buster" enzyme removes unneeded clots after healing has occurred during fibrinolysis? plasmin |
plasmin |
|
During erythroblastosis fetalis, a Rh- mother’s anti-Rh antibodies that have crossed the placenta will cause agglutination of the fetus’s Rh+ RBCs. However, the reverse problem never happens when a Rh+ mother is pregnant with a Rh- fetus, that is, antibodies produced by the fetus cannot cause agglutination of the mother’s Rh+ RBCs. This is true because ______. -agglutinins are physically too large to pass across the placenta |
antibodies that can cause this agglutination are not produced by a fetus |
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Which ABO blood type is considered to be the universal recipient? |
AB |
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Digesting a clot after it is formed requires activation of what plasma protein by tPA? plasmin |
plasminogen |
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Which of the following would NOT lead to a bleeding disorder? vitamin K deficiency |
excess calcium in the diet |
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A person who lacks agglutinogen A but has agglutinogen B would have blood type __________. |
B |
|
What is a hematocrit? |
Hematocrit is the percentage of erythrocytes in a whole blood sample |
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Which plasma constituent is the main contributor to clotting? alpha globulins |
fibrinogen |
|
Which of these represents the majority of whole blood by volume? plasma |
Plasma |
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Which of the following is true of the structure of an erythrocyte? -Erythrocytes are larger than other cells in the blood. |
Erythrocytes can bend and twist to fit through vessels. |
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What is the name of the protein found in erythrocytes that transports respiratory gases? antibodies |
hemoglobin |
|
How many oxygen molecules can be transported by one hemoglobin molecule? two |
four |
|
Which formed element can be described as membrane-enclosed cytoplasmic fragments? platelets |
platelets |
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