CH. 19 AP2 – Blood – Flashcards
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Whole blood for testing in a clinical laboratory is usually collected from
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a superficial vein
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A typical adult hematocrit is
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45
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The most abundant plasma protein is __________.
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albumin
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Plasma proteins essential in body defense are the
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immunoglobulins
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The plasma protein involved in blood clotting is
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fibrinogen
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What structure binds hemoglobin molecule
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oxygen
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In adults, the only site of red blood cell production, and the primary site of white blood cell formation, is the
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red bone marrow.
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________ is a condition in which the oxygen-carrying capacity of the blood is reduced.
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anemia
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Pernicious anemia caused by a lack of intrinsic factor is specifically treated by
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injections of vitamin B12.
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Aged and damaged erythrocytes are broken down by macrophages in the
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spleen, liver, and bone marrow.
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The process of red blood cell production is called
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erythropoiesis
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A person with a type A positive blood can safely receive blood from all of these donors EXCEPT __________.
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B+
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Antigens of the surface of red blood cells are also called ________ and antibodies in the blood plasma are also called ________.
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agglutinogens; agglutinins
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Which of the following combinations may result in the hemolytic disease of the newborn?
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mother Rh negative, baby Rh positive
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The white blood cell type that most rapidly increases in number after a bacterial infection is the __________.
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neutrophils
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White blood cells that release histamine at the site of an injury are
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basophils
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All of the following are true of neutrophils except that they are
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important in coagulation.
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The blood cells involved in specific immunity are the
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lymphocytes
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If a patient has thrombocytopenia, the best therapy is infusion of __________.
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purified platelets
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The function of platelets is to assist in the
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process called hemostasis.
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Which of these phases is NOT part of hemostasis?
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erythropoiesis phase
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The common pathway in coagulation ends with __________.
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conversion of soluble fibrinogen to insoluble fibrin
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The enzyme that dissolves fibrin is named __________.
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plasmin
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Most of the protein factors that are required for clotting are synthesized by
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liver
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The extrinsic pathway of coagulation is initiated by the
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release of tissue factor (Factor III) by damaged endothelium.
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How would removal of calcium ions from a blood sample affect coagulation?
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Coagulation would be prevented.
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A fibrin network that contains trapped blood cells and platelets is called a(n)
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blood clot.
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