Ch 19 Blood

21) The function of red blood cells is to A) carry carbon dioxide from the cells to the lungs. B) carry oxygen from the lungs to the body's cells. C) carry nutrients from the digestive system to the body's cells. D) defend the body against infectious organisms. E) both A and B

E

21) The function of red blood cells is to A) carry carbon dioxide from the cells to the lungs. B) carry oxygen from the lungs to the body's cells. C) carry nutrients from the digestive system to the body's D) defend the body against infectious organisms. E) both A and B

E

24) The function of hemoglobin is to A) carry oxygen. B) carry carbon dioxide. C) aid in the process of blood clotting D) A,B, and C eB) A and B only

E

28) The conversion of fibrinogen to fibrin is catalyzed by the enzyme A) prothrombinase. B) plasmin. C) fibrinogen-converting enzyme D) factor VIII. E) thrombins

E

29) Aged and damaged erythrocytes are broken down by the A) liver. B) spleen. C) bone marrow. D) digestive tract. E) A, B, and Ca

E

31) Most of the iron that is removed from degraded hemoglobin is A) excreted by the liver. B) excreted by the kidneys C) excreted by intestines D) stored in yellow bone marrow E) recycled to red bone marrow

E

33) The process of red blood cell production is called A) erythropenia. B) hemocytosis C) hematopenia. D) erythrocytosis. E) erythropoiesis

E

41) Platelets are stored as a reserve in case of hemorrhage in A) the splenic artery. B) the splenic vein. C) the spleen. D) other vascular organs. E) C and D only

E

53) Hemolytic disease of the newborn may result if A) both the father and the mother are Rh negative. B) both the father and the mother are Rh positive. C) the mother is Rh positive and the father is Rh negative D) an Rh positive mother E) an Rh positive mother carries an Rh negative fetus

E

56) Which of the following is true of basophils? A) granules contain heparin B) granules contain histamine C) constitute about 1 percent of WBCs D) attract other defense cells E) all of the above

E

Which of the following is a function of the blood? A) transport of nutrients and wastes B) transport of gases C) transport of body heat D) defense against toxins and pathogens E) all of the above

E

Whole blood for testing in clinical laboratory is usually collected A) an arteriole. B) a superficial artery. C) the heart. D) a capillary. E) a superficial vein

E

23) People with type AB blood are considered the "universal recipient" for trąnsfusions because A) their blood lacks A or B agglutinins B) their blood is plentiful in A and B agglutinins. C) they are usually Rh negative. D) they usually have very strong immune systems. E) their blood cells lack A and B antigens.

A

32) In adults, erythropoiesis exclusively takes place in A) red bone marrow B) the liver C) lymphoid tissue. D) yellow bone marrow. E) the spleen

A

22) More than 95 percent of the protein in a red blood cell is A) hemoglobin. B) albumin. C) fibrinogen. D) porphyrin. E) immunoglobulin.

A

34) The developmental stage at which erythrocytes enter the circulation A) reticulocytes B) band forms. C) myeloid cells. D) hemocytoblasts. E) proerythrocytes.

A

48) A person whose platelet count is 40,000/ul is suffering from A) thrombocytopenia B) leukopenia. C) leukocytosis. D) hemocytosis. E) thrombocytosis

A

A person who has a low blood volume is said to be A) hypovolemic. B) antivolemic. C) normovolemic D) isovolemic. E) hypervolemic

A

7) Each of the following is a characteristic of whole blood, except a A) temperature of approximately 38 degrees B) viscosity about the same as water.? C) deep red color from hemoglobin. D) pH of 7.4. E) built-in system for clotting.

B

Formed elements make up about what percentage of blood? A) 20 percent B) 45 percent C) 38 percent D) 60 percent E) 55 percent

B

Platelets function in all of that except dissolving formed clot A) releasing chemical that stimulate clotting B) dissolving a formed clot C) forming temporary clump in injured areas. D) contraction after clot formation. E) initiating the clotting process

B

18) Red blood cell production is regulated by the hormone A) renin. B) thymosin. C) angiotensin D) M-CSF E) erythropoietin

E

19) Which of the following statements concerning red blood cells is false? A) Red cells are specialized for carrying oxygen. B) Red cells lack mitochondria. C) Red cells can form stacks called rouleaux D) Red cells are biconcave discs. E) Red cells are about 18 um in diameter (not large)

E

26) Pernicious anemia caused by a lack of intrinsic factor is specifically treated by A) oral doses of iron. B) injections of iron. C) blood transfusion. D) injections of vitamin B12 E) oral doses of vitamin B12.

D

36) All of the following are true of neutrophils, except that they are A) active in fighting bacterial infections. nrurronils B) granular leukocytes. C) also known as polymorphonuclear leukocytes. D) important in coagulationg E) phagocytic.

D

45) The common pathway of coagulation begins with the A) conversion of fibrinogen to fibrin B) sticking of platelets to damaged tissue C) release of tissue factor by damaged endothelium. D) conversion of FactorX to prothrombinase E) activation of a proenzyme exposed to collagen.

D

The combination of plasma and formed elements is called A) extracellular fluid. B) serum. C) lymph. D) whole blood E) packed blood.

D

Which of the following statements about blood is false? A) is more viscous than water B) contains buffers that control pH C) is about 55 percent plasma D) normal pH is 6.8-7.0 E) None of the above is falseBall are true

D

The most abundant component of plasma is A)water B) gases. C) proteins. D) nutrients. E) ions.

A

The total volume of blood in the body of a 76-kg man is approximately —- liters A)5.3 B) 10 C) 3.8 D) 4.4 E) 6 to 8

A

17) Granulocytes form in A) the spleen. B) yellow bone marrow C) red bone marrow D) the intestines E) the thymus.

C

20) The average lifespan of a red blood cell is A) 1 month. B) many years. C) 4 months D) about 1 year. E) 24 hours.

C

11) The most abundant proteins in blood plasma are A) albumins B) fibrinogens. C) lipoproteins. D) transport proteins. E) globulins.

A

13) A plasma protein essential for blood coagulation is A) fibrinogen B) metalloprotein D. C) immunoglobulin A. D) albumin alpha. E) lipoprotein C

A

15) All the circulating red blood cells originate in the A) red bone marrow. B) heart. C) spleen. D) lymph tissue. E) thymus.

A

27) A red blood cell that contains normal amounts of hemoglobin would be called A) hypochromic. B) normalcytic C) normochromic D) macrocytic. E) hyperchromic.

C

49) Which of these descriptions best matches the term B lymphocytes? A) often elevated in allergic individuals B) helper cells are one type C) kill bacteria using hydrogen peroxide D) produce antibodies in response to antigens E) adhere to collagen beneath endothelium

D

50) The pus associated with infected wounds contains A) cellular debris. B) dead neutrophils. C) tissue fluids. D) all of the above E) B and C only

D

54) A person with Type A blood has A) antigen A on the RBCs. B) anti-B agglutinins in the plasma. C) anti-A agglutinins on the red blood cells. D) A and B only E) B and C only

D

55) Which of these descriptions best matches the term T lymphocytes? A) kill bacteria using hydrogen peroxide endothelium B) adhere to collagen beneath C) often elevated in allergic individuals D) helper cells are one type E) produce antibodies in response to antigens

D

12) Plasma proteins essential in body defense are the A) metalloproteins. B) fibrinogen C) albumins. D) lipoproteins. E) immunoglobulins.

B

35) are immature erythrocytes that are present in the circulation. A) Myeloblasts B) reticulocytes C) Band cells D) Normoblasts E) Erythroblasts

B

37) White blood cells that release histamine at the site of an injury are A) monocytes. B) basophils. C) lymphocytes. D) eosinophils. E) neutrophils.

B

40) Platelets are pinched off from giant multinucleated cells in the bone marrow called A) myeloblasts B) megakaryocytes C) normoblasts D) lymphoblasts. E) erythroblasts.

B

43) The extrinsic pathway of coagulation is initiated by the A) activation of Factor VII exposed to collagen. B) release of tissue factor (Factor IID by damaged endothelfum C) release of heparin from the liver D) sticking of platelets to damaged tissue E) conversion of prothrombin to thrombin

B

47) Which of the following vitamins is needed for the formation of clotting factors? A) vitamin B B) vitamin k C) vitamin D D) vitamin E E) vitamin A

B

51) During a bacterial infection you would expect to see increased numbers of A) thrombocytes B) neutrophils. C) eosinophils. D) basophils. E) reticulocytes

B

52) In which of the following situations would you expect the blood level of bilirubin to be elevated? A) a person suffering from hemolysis B) an alcoholic with a damaged liver C) iron-deficient diet D ) A , B , and C E) A and B only

B

25) _____is a condition in which the oxygen-carrying capacity of the blood is reduced A) Thrombocytopenia B) Leukemia C) Anemia D) Polycythemia E) Leukopenia

C

38) White blood cells that are increased in allergic individuals are the A) neutrophils B) lymphocytes. C) eosinophils D) nronocytes E) basophils

C

42)involves a cascade of reactions leading to the conversion of fibrinogen to fibrin. A) Fibrinolysis B) The platelet phase C) Coagulation D) vascular spasm E) retraction

C

44) The intrinsic pathway of coagulation is activated by the A) sticking of platelets to damaged tissue. B) release of tissue factor (Factor III) by damaged endothelium. C) activation of Factor VIl exposed to collagen D) conversion of prothrombin to thrombin. E) release of heparin from the liver.

C

46) The process of fibrinolysis A) activates fibrinogen B) draws torn edges of damaged tissue closer together C) dissolves clots D) forms thrombi E) forms emboli.

C

The process of lymphopoiesis goes on in all of the following organs, except A) the red bone marrow B) the lymph nodes C) the kidneys D) the spleen E) the thymus

C

The waste product bilirubin is is produced from A) heme molecules plus iron. B) abnormal proteins found in red blood cells. C) heme molecules lacking iron D) iron found in hemoglobin molecules. E) globin chains of hemoglobin.

C

When checking the efficiency of gas exchange, it may be necessary to draw a blood sample from A) the lungs , B) capillaries C) an artery D) a vein. E) the heart.

C