1. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings C h a p t e r 23 The Lymphoid System PowerPoint ® Lecture Slides prepared by Agnes Yard and Michael Yard Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings

2. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which type of lymphocyte attacks foreign cells or body cells infected by viruses? a.suppressor T cells b. cytotoxic T cells c. plasmocytes d. memory B cells

3. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings In the spleen, the cell population of the red pulp includes: a.free macrophages b. red blood cells c. fixed macrophages d. all of the above

4. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings The thoracic duct collects lymph from ________ of the body inferior to the diaphragm, and from ________ side of the body superior to the diaphragm. a.both sides, the left side b. the right side, both sides c. both sides, the right side d. the left side, both sides

5. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings In the immune response to bacterial infection, antigen presentation does not lead to: a.activation of B cells b. activation of cytotoxic T cells c. interferon release d. activation of helper T cells

6. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which of the following is/are not present in lymph? a.microglia b. macrophages of various types c. lymphocytes d. interstitial fluid

7. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Regarding the immune response, what is the first event after the appearance of an antigen? a.phagocytosis of the antigen by a macrophage b. stimulation of NK cells c. activation of cytotoxic T cells d. activation of B cells

8. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which of the following statements regarding the spleen is/are true? a.Areas of white pulp form splenic cords, which contain erythrocytes. b.Areas of red pulp form lymphoid nodules. c. The cell population of the red pulp includes all of the normal components of the circulating blood, plus fixed and free macrophages. d. All of the statements are true.

9. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings If a lymphatic vessel is compressed or blocked, or its valves are damaged, lymph drainage may slow or cease, causing the affected tissues to become distended and swollen. What is the term for this condition? a.erythematosus b. lymphedema c. lymphomegaly d. lymphadenopathy

10. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which of the following statements regarding the spleen is incorrect? a.It functions in the storage of iron recycled from fragmented red blood cells. b.Areas of white pulp form lymphoid nodules. c. It functions in the initiation of immune responses by B cells and T cells in response to antigens in the circulating blood. d. None of the statements is incorrect.

11. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which of the following structures are generally not visible because of their location? a.lingual tonsils b. pharyngeal tonsils c. adenoids d.palatine tonsils

12. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Lymphoid vessels originate in ________ tissues and deliver lymph to the ________ system. a.nervous, arterial b. peripheral, venous c. nervous, venous d. peripheral, arterial

13. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings A typical B cell spends how long in a lymph node before moving to another location? a.approximately 30 hours b. approximately 1 minute c. approximately 30 minutes d. approximately 5 hours

14. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings What is the term for large-diameter collecting vessels in the lymphatic system? a.anastomoses b.lymphatic capillaries c.cisterna chyli d.lymphatic ducts

15. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Where does lymphopoiesis occur? a.in the bone marrow and spleen b.in the spleen and thymus c.in the lymph nodes and spleen d.in the bone marrow and thymus

16. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Aggregated B cells with germinal centers similar to those of lymphoid nodules are found in which portion of a lymph node ? a.in the medulla b. in the deep cortex c. in the medullary cords d. in the outer cortex

17. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Most immune responses begin in ________, where immature or activated ________ divide to produce many cells of the same type. a.secondary lymphoid structures, lymphocytes b.primary lymphoid structures, lymphocytes c.primary lymphoid structures, macrophages d.secondary lymphoid structures, macrophages

18. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Acquired immune deficiency syndrome (AIDS) results from a viral infection that selectively destroys which cells? a.memory B cells b. T cells c. plasmocytes d. immunoglobulins (antibodies)

19. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings In which of the following are superficial lymphatics located? a.the dermis of the skin b. the dense connective tissues of the body c. the stratum spinosum of the epidermis d. the subcutaneous layer next to the skin

20. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Regarding the thymus, ________ cells are scattered among the lymphocytes, and produce thymic hormones that promote the differentiation of functional ________. a.reticular, B cells b.plasmocytes, B cells c.reticular, T cells d.plasmocytes, T cells

21. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which type of lymphocyte is responsible for “antibody- mediated immunity?” a.memory T cells b. helper T cells c. suppressor T cells d. B cells

22. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which lymph nodes filter lymph arriving from the urinary and reproductive systems? a.intestinal lymph nodes b. mesenterial lymph nodes c. abdominal lymph nodes d. inguinal lymph nodes

23. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings With each ________, pressure ________ in the thoracic cavity, and lymph is pulled from smaller lymphatic vessels into lymphatic ducts. a.inhalation, decreases b. exhalation, increases c. inhalation, increases d. exhalation, decreases

24. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings What is the approximate blood pressure at the proximal end of a systemic capillary, which forces water and solutes out of the plasma? a.10 mm Hg b. 5 mm Hg c. 35 mm Hg d. 100 mm Hg

25. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings With advancing age, ________ become less responsive to antigens. Additionally, ________ are less responsive, and antibody levels do not rise as quickly after antigen exposure. a.macrophages, T cells b. T cells, B cells c. B cells, lymphocytes d. B cells, T cells

26. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Lymphatic capillaries differ from vascular capillaries in that the lymphatic capillaries are ________ in both diameter and in sectional view; and lymphatic capillaries have ________ walls. a.smaller, thinner b. larger, thicker c. larger, thinner d. smaller, thicker