18. All of the following are benefits of fever, EXCEPT: a. mobilizes defenses by

Question

18. All of the following are benefits of fever, EXCEPT:

        a.   mobilizes defenses by promoting chemotaxis

        b.   inhibit bacterial growth and reproduction

        c.   catalyses metabolic reactions

        d.    increase metabolic rates

        e.   accelerates tissue repair

19. Your instructor gave you a paper with the following information:

                 1. Proteins C2, C3, C1, C5, C6, C4

                 2. Proteins C8, C3, C5, C9, C6, C7

                 3. Spontaneous activation

                 4. Antigen-antibody complex

                 5. MAC-Complex

                 6. Factor D

Place them in the order that best represents the alternate pathway of the complement system

4, 1, 2, 5

4, 1, 6, 5

6, 4, 3, 2

1, 3, 4, 6

3, 6, 2, 5

20. Acidic barrier is used as a first line of defense by all of the following structures, EXCEPT:

        a.   skin

        b. stomach

        c. vagina

        d.   nasopharynx

21.   Antigen presenting cells (APC):

         a.   are macrophages and dendritic cells

         b.   use MHC- II molecules to display antigens

         c.   engulf and process antigens for presentation to T-helper cells

         d.   strategically located in lymph nodes and other secondary lymphoid organs

         e.    All of the above.     

22.   Mrs. Jones titer shows high level antibodies but she has never had Chagus disease. Mrs. Jones is scared, although she has had no sign of illness, even after being exposed to this contagious disease. She is exhibiting:  

a.         natural acquired active immunity.

b.         natural acquired passive immunity.

c.         an allergic reaction.

d.         innate immunity.

            e.         artificial acquired passive immunity.

23. The only T-cell population that can directlyattack and kill cells are the:

a.         T- cytotoxic cells.

b.         T-helper cells.

c.         T- suppressor cells.

d.         T-plasma cells.

            e.         T - hypersensitive cells

24. Which of the following pairs of organs would NOTbe drained by the thoracic duct?

      1. pancreas and stomach

      2. right molar and right breast

      3.   appendix and left kidneys

      4. left knee and spleen

      5.   right testes and left ovary

      a.   2 only

      b.   1, and 4

      c.   4 and 5

      d.   2, 3 and 5

      e.   1 only

25. Which of the following pairs is mismatched?

        a.    basophils = release histamine

        b.    plasma cells = release perforin

        c.    T-cytotoxic cells = release granzymes

        d.    T-helper cells = release interleukin-2

        e.    neutrophils = release defensin

26. Which of the following statements is false?

lymphatic vessels are closest in their histology to arteries

lymphatic ducts eventually empty into subclavian veins

thymus glands are large in infants but atrophy in adults

pharyngeal tonsils are also called adenoids

Peyer’s patches are clusters of lymph nodes in the ileum

27. With innate immunity,

      a.   each time the body is exposed to a substance, the response is the same.

      b.   specificity and memory are involved.

      c.   the body may become immune to a disease.

      d.   antibodies may be produced.

      e.   all of these

28. Which of the following statement is false about the lymphatic organs/ tissues?

          a.   NK cells are large granular lymphocytes of the innate system

          b.   thymus mounts immune responses against bacteria and viruses

          c.   tonsils are lymphatic structures found in the respiratory tract

          d.   haptens are very small molecular weight antigens to illicit a response on their own

          e.   lymph nodes cleans the lymph of microbes, cancer cells and other antigens

29. Which of the following represents the pathway of lymph from the systemic capillaries to the heart?

      a.   lymphatic capillaries—lymphatic vessels—lymphatic ducts—subclavian v---lymphatic trunks---heart

      b.   lymphatic vessels--- lymphatic trunks-- lymphatic ducts--- lymphatic capillaries---subclavian v---heart

      c.   lymphatic capillaries—lymphatic vessels—lymphatic trunk—lymphatic duct—subclavian v---heart

      d.   lymphatic capillaries— subclavian v ---lymphatic trunks-- lymphatic vessel— lymphatic ducts –--heart

      e.   lymphatic vessels--- lymphatic capillaries--- lymphatic trunks--- subclavian v ---lymphatic ducts—heart

30. It is correct to assume action by the innate defense when,

        a. antibodies are produced.

        b. specificity and memory are involved.

        c.   the body becomes immune to a disease.

        d. each time the body is exposed to a substance, the response is the same.

        e.   All of the above occur

Explanation / Answer

18.e. Accelerates tissue repair.

19.4,1,2,5.

20.d.nasopharynx

21.e.all of above

22.d.innate immunity

23.a.T-cytoxic cells

24.a.2 only

25.b.plasma cells releases perforin

26.lymphatic vessels are closest in their histology to arteries

27.e.all of above

28.c.tonsils are lymphatic structure found in respiratory tract

29.c.lymphatic cappilary--lymphatic vessels--lymphatic trunks-

Lymphatic duct--subclavian vein--heart.

30.e.all of above correct.

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