CHAPTER 19 Cardiovascular System: Blood

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1. Which of these is a function of blood?a. clot formationb. protection against foreign substancesc. maintenance of body temperatured. regulation of pH and osmosise. All of these are correct.

2. Which of these is not a component of plasma?a. nitrogen c. plateletsb. sodium ions d. water

e. urea

11. The most numerous type of white blood cell, whose primary functionis phagocytosis, isa. eosinophils. c. neutrophils. e. lymphocytes.b. basophils. d. monocytes.

12. Monocytesa. are the smallest white blood cells.b. increase in number during chronic infections.c. give rise to neutrophils.d. produce antibodies.

13. The smallest white blood cells, which include B cells and T cells, area. eosinophils. c. neutrophils. e. lymphocytes.b. basophils. d. monocytes.

14. Plateletsa. are derived from megakaryocytes.b. are cell fragments.c. have surface molecules that attach to collagen.d. play an important role in clot formation.e. All of these are correct.

15. Given these processes in platelet plug formation:(1) platelet adhesion (3) platelet release reaction(2) platelet aggregation

Choose the arrangement that lists the processes in the correct orderafter a blood vessel is damaged.a. 1,2,3 c. 3,1,2 e. 2,3,1b. 1,3,2 d. 3,2,1

16. A constituent of plasma that forms the network of fibers in a clot isa. fibrinogen. c. platelets. e. prothrombinase.b. tissue factor. d. thrombin.

17. Given these chemicals:(1) activated factor XII(2) fibrinogen

(3) prothrombinase(4) thrombin

3. Which of these proteins is normally found in the plasma and plays animportant role in maintaining the osmotic concentration of the blood?a. albumin c. platelets e. globulinsb. fibrinogen d. hemoglobin

4. Red blood cellsa. are the least numerous formed element in the blood.b. are phagocytic cells.c. are produced in the yellow marrow.d. do not have a nucleus.e. All of these are correct.

5. Given these ways of transporting carbon dioxide in the blood:(1) bicarbonate ions(2) combined with blood proteins(3) dissolved in plasma

Choose the arrangement that lists them in the correct order from larg-est to smallest percentage of carbon dioxide transported.a. 1,2,3 c. 2,3,1 e. 3,1,2b. 1,3,2 d. 2,1,3

6. Each hemoglobin molecule can become associated withoxygen molecule(s).a. one d. fourb. two e. an unlimited number ofc. three

7. Erythropoietina. is produced mainly by the heart.b. inhibits the production of red blood cells.c. production increases when blood oxygen decreases.d. production is inhibited by testosterone.e. All of these are correct.

8. Which of these changes occur(s) in the blood in response to the initia-tion of a vigorous exercise program?a. increased erythropoietin productionb. increased concentration of reticulocytesc. decreased bilirubin formationd. Both a and b are correct.e. All of these are correct.

9. Which of the components of hemoglobin is correctly matched with itsfate following the destruction of a red blood cell?a. heme—reused to form a new hemoglobin moleculeb. globin—broken down into amino acidsc. iron—mostly secreted in biled. All of these are correct.

10. The blood cells that protect against worm parasites area. eosinophils. c. neutrophils. e. lymphocytes.b. basophils. d. monocytes.

Choose the arrangement that lists the chemicals in the order they areused during clot formation.a. 1,3,4,2 c. 3,2,1,4 e. 3,4,2,1b. 2,3,4,1 d. 3,1,2,4

18. The extrinsic pathwaya. begins with the release of thromboplastin (tissue factor).b. leads to the production of activated factor X. + c. requires Ca 2 .d. All of these are correct.

19. The chemical involved in the breakdown of a clot (fibrinolysis) isa. antithrombin. d. plasmin.b. fibrinogen. e. sodium citrate.c. heparin

20. A person with type A blooda. has anti-A antibodies.b. has type B antigens.c. will have a transfusion reaction if given type B blood.d. All of these are correct.

21. In the United States, the most common blood type isa. A positive. c. O positive. e. AB negative.b. B positive. d. O negative.

Answers in appendix E