Practice Questions on the Lymphatic and the Immune System
Page 3

  1. Which of the following are true of lymphatic capillaries? (You may select more than one.)
    1. They typically carry erythrocytes
    2. They typically carry lymphocytes
    3. They are blind-ending tubules
    4. They contain valves
    5. They have fenestrations in their walls
    6. They are more permeable than blood capillaries

  2. Which of the following is the typical site of T and B cell activation?
    1. Red marrow
    2. Thymus
    3. Lymph nodes
    4. Lymph vessels
    5. All of the above

  3. Lymph fluid returns to the general circulation by draining into the:
    1. SVC
    2. IVC
    3. Cisterna chyli
    4. Azygos and hemiazygos veins
    5. Subclavian veins

  4. Nonspecific immunity includes all of the following EXCEPT:
    1. Immunoglobulins
    2. Complement
    3. Interferons
    4. Neutrophils
    5. Lysozyme

  5. The most abundant immunoglobulin type is:
    1. IgA
    2. IgM
    3. IgF
    4. IgG

  6. Complement:
    1. Interferes with viral replication
    2. Is involved in antibody production
    3. Aids in antigen presentation
    4. Causes cell lysis
    5. Increases HCG production

  7. Which of the following is NOT a difference between IgG and IgM?
    1. IgM is a pentamer while IgG is a monomer
    2. IgM is found in lower amounts in the serum
    3. IgG can cross the placenta while IgM cannot
    4. IgG has 2 antigen-binding sites while IgM has 10
    5. IgG is made by plasma cells while IgM is not

  8. In a massive allergic reaction, venous return will ____________.
  9. Smoking can increase the likelihood of bronchitis because it causes a(n):
    1. Decrease in respiratory cilia function
    2. Decrease in secretion of lysozyme by alveolar type I cells
    3. Increase in respiratory cilia function
    4. Increase in secretion of lysozyme by alveolar type I cells

  10. Birth control pills decrease vaginal acidity; thus, birth control pills can cause the amount of vaginal flora to _______________.
  11. Which of the following are NOT derived from monocytes
    1. Kupffer cells
    2. Langerhans cells
    3. Dust cells
    4. None of the above

  12. The cellular organelle that contains the necessary enzymes for the digestion of phagocytosed material is the:
    1. Peroxisome
    2. Glyoxisome
    3. Peroxizyme
    4. Lysosome
    5. Lysozyme

  13. _____________________ are participants in non-specific immunity that attack virally infected cells.
  14. Tissue injury causes a release of ______________ which results in an increased number of circulating white blood cells.
    1. Leukopoiesis-inhibiting factor
    2. Leukocytosis-stimulating factor
    3. Diapedesis-inhibiting factor
    4. Erythropoietin
    5. Thromboxane A2

  15. _______________ inhibits the production of viral _______________.
    1. Interferon; nucleic acids
    2. Interferon; proteins
    3. Complement; nucleic acids
    4. Complement; cell wall polysaccharides
    5. All of the above

  16. The membrane attack complex causes bacterial lysis by:
    1. Inhibiting glycolytic enzymes such as hexokinase
    2. Interfering with the distribution of ions across the plasma membrane
    3. Causing the transcription of genes that promote apoptosis
    4. Disrupting the pentose phosphate pathway

  17. As the opsonization of a bacterium increases, the likelihood of it being phagocytosed will ______________.
  18. An increase in body temperature helps repel pathogens by:
    1. Increasing the rate at which WBC's can be mobilized
    2. Accelerating repairs
    3. Inhibiting pathogen growth
    4. All of the above

  19. ______________ is a key component of our physical barrier to invasion because it is highly resistant to bacterial enzymes and toxins.
    1. Clathrin
    2. Keratin
    3. Caratin
    4. Hyaline

  20. Complement is involved with both specific and nonspecific immunity.
    1. This statement is TRUE
    2. This statement is FALSE

  21. In the absence of a viral invasion of the body, would you expect interferon to be released?
    1. YES
    2. NO

  22. Lymph differs from capillary blood in which of the following?
    1. Location
    2. Protein content
    3. Cell content
    1. I and II only
    2. I only
    3. I and III only
    4. I, II, and III

  23. Lymphatic capillaries are:
    1. Found in the abdominopelvic cavity
    2. Involved in fat absorption
    3. Highly permeable
    4. All of the above
    5. 2 of the above

  24. The volume of lymph typically drained by the right lymphatic duct is GREATER than the volume of lymph typically drained by the thoracic duct.
    1. This statement is TRUE
    2. This statement is FALSE

  25. All lymphoid organs are totally encapsulated.
    1. This statement is TRUE
    2. This statement is FALSE

  26. As respiratory rate and depth increases, lymph flow rate will _________________.
  27. Splenic cords:
    1. Consist of white pulp primarily
    2. Are avascular
    3. Primarily serve an immune function
    4. Consist of a large number of macrophages perched upon reticular fibers

  28. The thymus:
    1. Of an adult has more adipose tissue than the thymus of an infant
    2. Secretes thymosin and erythropoietin
    3. Is involved primarily with B lymphocyte maturation
    4. Is where T lymphocytes become immunocompetent
    5. 2 of the above

  29. The pharyngeal tonsil is:
    1. Found beneath the tongue
    2. Called the adenoids when enlarged
    3. Found on the anterior wall of the nasopharynx
    4. A totally encapsulated lymphoid organ
    5. All of the above
    6. 2 of the above

  30. An aggregate of lymphoid follicles in the respiratory tract is an example of:
    1. MALT
    2. GALT
    3. BALT
    4. A and b
    5. A and c

  31. A(n) ________________ is a molecule that is too small to cause an immune response on its own but becomes antigenic when coupled to another molecule.
  32. Cellular immunity is primarily the function of:
    1. B lymphocytes
    2. T lymphocytes
    3. A and b
    4. Neither a nor b

  33. Lymphatic vessels resemble arterioles more than they resemble veins.
    1. This statement is TRUE
    2. This statement is FALSE

  34. The only unpaired lymphatic trunk is the:
    1. Lumbar
    2. Bronchomediastinal
    3. Subclavian
    4. Intestinal
    5. Jugular

  35. _________ is released from basophils and mast cells and causes ____________.
    1. Histamine; vasoconstriction
    2. Histamine; vasodilation
    3. Leukotriene; vasoconstriction
    4. Leukotriene; vasodilation


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