Question

3.     All of the following statements are true, EXCEPT:

        

redness is caused by increase blood flow or hyperemia at tissue injury

chemotaxis is a process used to phagocytes to locate antigens

Anaphylactic shock results from the effects of histamine on peripheral blood vessels

MS and AIDS are examples of immunodeficiency diseases

Type 1 diabetes mellitus is an example of an autoimmune disease

4.   MHC class II proteins:

            1.         attach to peptides fragments of exogenous antigens in RER

            2.         are found only on antigen-presenting cells.

            3.         normally display self-antigens.

            4.         are found on all cells.

            5.         merges with vesicle of digested peptide fragments

1 and 3

2 only

2 and 5

3, 4 and 5

1, 3 and 4

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

31. Select the statement that is true about the spleen.

            a.   The spleen filters the lymph much the same way the lymph nodes filter the blood.

            b.   The spleen harbors eosinophils waiting for parasites to attack the body.

            c.   The spleen is the major site of red and white blood cell production in the adult.

            d.   The spleen filters the blood much the same way the lymph nodes filter the lymph.

            e.    Both B and D

37. Which of the following classes of chemicals participate in co-stimulation after antigen presentation?

    a.   antibodies

    b.   histamine

    c.   interleukines

    d.   interferons

    e.   complement

45.   Antibodies:

     a.   are foreign substances introduced into the body

     b.   are molecules produced by Bmemory and Tcytotoxic cell

     c.   stimulate an adaptive immune system response

     d.   are synthesized by plasma cells

     e.   Both B, C and D only

Answer 1

3. MS and AIDS are examples of immunodeficiency diseases

MS is an autoimmune disease not an immunodeficiency disease.

4.   MHC class II proteins:

2 only

they are found only on APC.

27. With innate immunity,

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

BECAUSE IT DOESN'T INVOLVE ANY MEMORY AND SPECIFICITY. SO, it is similar every time.

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

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

They are extremely small they can't illicit an immune response on their own.

31. Select the statement that is true about the spleen.

d.   The spleen filters the blood much the same way the lymph nodes filter the lymph.

37. Which of the following classes of chemicals participate in co-stimulation after antigen presentation?

    e.   complement

In B cell costimulation complement play a very important role. B cells cannot be stimulated without complement receptors and proteins.

45.   Antibodies:  

     d.   are synthesized by plasma cells

they are formed only by plasma cells.