_____ 1. A group of organs whose main function is to collect extra fluid from cells and return it to the blood is the a. cardiovascular system.c. circulatory system. b. lymphatic system.d. atria and ventricles. 2. The lymphatic system helps your body to fight . VESSELS OF THE LYMPHATIC SYSTEM 3. The smallest lymph vessels are called . 4. Why are some particles NOT absorbed by blood vessels? 5. Fluid and particles collected by lymphatic vessels and nodes are called . 6. Where does lymph drain? OTHER PARTS OF THE LYMPHATIC SYSTEM ______ 7. Where are most red and white blood cells produced? a. bone marrow b. lymph vessels c. blood vessels d. lymph nodes ______ 8. Special white blood cells that fight pathogens are called a. RBCs. b. nodes. c. lymphocytes. d. bean cells. ______ 9. Small oval masses of lymphatic tissue found in lymphatic vessels are called a. lymph nodes. c. lymph fluids. b. lymph capillaries. d. killer cells. NameClassDate Directed Reading A Skills Worksheet

Question

Copyright © by Holt, Rinehart and Winston. All rights reserved. Holt Science and Technology8Circulation and Respiration NameClassDate Directed Reading A continued ______10. What do lymph nodes do? a. remove nodes b. create new lymph c. create new blood cells d. remove pathogens and dead cells from lymph ______11. What do killer T cells do? a. produce antibodies b. destroy pathogens c. destroy lymphocytes d. produce antigens ______12. What do B cells do? a. produce antibodies b. destroy pathogens c. destroy lymphocytes d. produce antigens ______13. The main gland of the lymphatic system is the a. bone marrow. b. lymph. c. thymus. d. lymph node. 14. The thymus gland produces that are ready to fight infection. 15. The largest organ in the lymphatic system is the . 16. List the two important functions of the spleen. 17. List four things the spleen does with red blood cells. 18. The lymphatic tissues at the back of the mouth are called . 19. Tonsils help defend the body against .
Directed Reading A SECTION: THE CARDIOVASCULAR SYSTEM 1. circulatory system 2. cardiovascular system 3. heart 4. blood vessel 5. blood vessels 6. B 7. A 8. B 9. B 10. A 11. C 12. to prevent blood from flowing backward 13. the valves 14. E 15. D 16. A 17. B 18. C 19. a capillary 20. veins 21. arteries 22. C 23. D 24. C 25. pulmonary 26. systemic 27. body 28. exercise 29. heart diseases 30. D 31. F 32. E 33. C 34. heart attack SECTION: BLOOD 1. 5 2. red blood cells, white blood cells, platelets, plasma 3. plasma 4. carry oxygen and nutrients through the body 5. oxygen you inhale 6. platelets 7. destroy pathogens and help clean wounds 8. viruses 9. antibodies 10. white blood cells 11. temperature 12. enlarge 13. B 14. when the ventricles contract 15. when the ventricles relax 16. heart and kidney 17. D 18. B 19. They react as if the antigens were pathogens. 20. O 21. lost blood SECTION: THE LYMPHATIC SYSTEM 1. B 2. pathogens 3. lymph capillaries 4. They are too large. 5. lymph 6. into the large neck veins 7. A 8. C 9. A 10. D 11. B 12. A 13. C 14. T cells 15. spleen 16. fighting infection; removing dead or damaged cells 17. produces, monitors, stores, and destroys 18. tonsils 19. infection SECTION: THE RESPIRATORY SYSTEM 1. energy 2. E 3. A 4. B 5. F 6. C 7. D

Answer 1

Here are the answers to the questions regarding the lymphatic system and related topics as per your provided information:

SECTION: THE LYMPHATIC SYSTEM

1. b. lymphatic system
2. pathogens
3. lymph capillaries
4. They are too large.
5. lymph
6. into the large neck veins

OTHER PARTS OF THE LYMPHATIC SYSTEM

7. a. bone marrow
8. c. lymphocytes
9. a. lymph nodes
10. d. remove pathogens and dead cells from lymph
11. b. destroy pathogens
12. a. produce antibodies
13. c. thymus
14. T cells
15. spleen
16. Fighting infection; removing dead or damaged cells
17. Produces, monitors, stores, and destroys red blood cells
18. tonsils
19. infection

If you need further assistance or clarification on any of the points, feel free to ask!