lymphatic system chapter 20

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lymphatic system chapter 20
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2014-10-08 13:26:37
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  1. Protein‐containing fluid within lymphatic vessels.
    Lymph
  2. Stores blood platelets
    Spleen
  3. Receives lymph from most of the body.
    Thoracic duct
  4. Small organs intimately associated with lymphatic vessels
    Lymph node
  5. Largest lymphatic organ
    Spleen
  6. Isolated clusters of lymph follicles found in the wall of the small intestine.
    Peyer's patches
  7. Peyer's patches are clusters of lymphoid tissue found primarily in the large intestine TF
    False
  8. The lymphatic capillaries function to absorb the excess protein‐containing interstitial fluid and return it to the bloodstream. TF
    True
  9. Lymph always flows away from the heart. TF
    False
  10. Lymphatic capillaries are permeable to proteins TF
    true
  11. Digested fats are absorbed from the intestine by the lymph capillaries TF
    True
  12. Chyle is delivered to the blood via the lymphatic system.
    True
  13. All lymphoid organs develop from mesoderm
    False
  14. About 3 liters of fluid are lost to the tissue spaces every 24 hours and are returned to the bloodstream as lymph. TF
    TRUE
  15. Because lymph vessels are very low‐pressure conduits, movements of adjacent tissues are important in propelling lymph through the lymphatics.
    TRUE
  16. Lymphoid tissue is mainly reticular connective tissue.
    True
  17. Lymphocytes reside temporarily in lymphoid tissue, then move to other parts of the body TF
    True
  18. All the lymphoid organs are well developed before birth. TF
    Fasle
  19. An infected lymph gland is called a bubo TF
    True
  20. When tissues are inflamed, lymphatic capillaries develop openings that permit uptake of large particles such as cell debris, pathogens, and cancer cells. TF
    True
  21. The cisterna chyli collects lymph from the lumbar trunks draining the upper limbs and from the intestinal trunk draining the digestive organs TF
    False
  22. If even a small part of the spleen is left in a ten‐year‐old child, it will most  likely regenerate itself. TF
    True
  23. All lymphatic organs are composed of epithelial tissue.
    False
  24. The most important role of the spleen is to provide a site for lymphocyte proliferation and immune surveillance and response. TF
    Fasle
  25. The simplest lymphoid organs are the lymph nodes
    False
  26. Small organs associated with lymphatic vessels are termed

    A)  lymph nodes 
    B)  cisterna chyli 
    C)  axillary nodes
    D)  lymph follicles
    A)  lymph nodes
    (this multiple choice question has been scrambled)
  27. Which of the following would not be classified as a lymphatic structure?

    A)  spleen
    B)  Peyer's patches of the intestine
    C)  tonsils
    D)  pancreas
    D)  pancreas
    (this multiple choice question has been scrambled)
  28. The distal portion of the small intestine contains clumps of lymph follicles called 
    A)  villi
    B)  rugae 
    C)  Peyer's patches 
    D)  islets of Langerhans
    C)  Peyer's patches
    (this multiple choice question has been scrambled)
  29. Both lymph and venous blood flow are heavily dependent on
    A)  two‐way valves
    B)  skeletal muscle contractions and differences in thoracic pressures due to respiratory movement
    C)  contraction of the vessels themselves
    D)  the pumping action of the heart
    B)  skeletal muscle contractions and differences in thoracic pressures due to respiratory movement
    (this multiple choice question has been scrambled)
  30. The thymus is most active during ________.   A)  childhood 
    B)  fetal development
    C)  middle age 
    D)  old age
    A)  childhood
  31. Which lymphatic structure drains lymph from the right upper limb and the right side of the head and thorax?
    A)  lumbar trunk 
    B)  cisterna chyli 
    C)  thoracic duct
    D)  right lymphatic duct
    D)  right lymphatic duct
    (this multiple choice question has been scrambled)
  32. What effect does age have on the size of the thymus?
    A)  The size of the thymus decreases continuously from birth to death.
    B)  The thymus is not affected by age.
    C)  The size of the thymus increases continuously from birth to death.
    D)  The thymus initially increases in size and then decreases in size from adolescence through old age.
    D)  The thymus initially increases in size and then decreases in size from adolescence through old age.
    (this multiple choice question has been scrambled)
  33. The lymphatic capillaries are ________. 
    A)  less permeable than blood capillaries
    B)  more permeable than blood capillaries
    C)  completely impermeable
    D)  as permeable as blood capillaries
    B)  more permeable than blood capillaries
    (this multiple choice question has been scrambled)
  34. Antibodies that act against a particular foreign substance are released by
    A)  plasma cells
    B)  lymph nodes 
    C)  T lymphocytes 
    D)  medullary cords
    A)  plasma cells
    (this multiple choice question has been scrambled)
  35. Lymph leaves a lymph node via ________. 
    A)  the cortical sinus
    B)  afferent lymphatic vessels 
    C)  efferent lymphatic vessels
    D)  the subscapular sinus 
    C)  efferent lymphatic vessels
    (this multiple choice question has been scrambled)
  36. Which cells become immunocompetent due to thymic hormones? 
    A)  lymphocytes 
    B)  macrophages 
    C)  basophils
    D)  monocytes
    A)  lymphocytes
    (this multiple choice question has been scrambled)
  37. Functions of the spleen include all of those below except
    A)  removal of old or defective blood cells from the blood
    B)  storage of iron
    C)  storage of blood platelets
    D)  forming crypts that trap bacteria
    D)  forming crypts that trap bacteria
    (this multiple choice question has been scrambled)
  38. When the lymphatic structures are blocked due to tumors, the result is ________.
    A)  abnormally high lymph drainage from the distal region
    B)  increased pressure in the lymphatics proximal to the blockage
    C)  severe localized edema distal to the blockage
    D)  shrinkage of tissues distal to the blockage due to inadequate delivery of lymph
    B)  increased pressure in the lymphatics proximal to the blockage
    (this multiple choice question has been scrambled)
  39. Select the correct statement about lymph transport.
    A)  Lymph transport depends on the movement of adjacent tissues, such as skeletal muscles.
    B)  Lymph transport is faster than that occurring in veins.
    C)  Lymph transport is only necessary when illness causes tissue swelling.
    D)  Under normal conditions, lymph vessels are very high‐pressure conduits.
    A)  Lymph transport depends on the movement of adjacent tissues, such as skeletal muscles.
    (this multiple choice question has been scrambled)
  40. Select the correct statement about lymphocytes.
    A)  The two main types are T cells and macrophages
    B)  B cells produce plasma cells, which secrete antibodies into the blood.
    C)  T cells are the only form of lymphocyte found in lymphoid tissue.
    D)  T cells are the precursors of B cells.
    B)  B cells produce plasma cells, which secrete antibodies into the blood.
    (this multiple choice question has been scrambled)
  41. Select the correct statement about lymphoid tissue.
    A)  Once a lymphocyte enters the lymphoid tissue, it resides there permanently.
    B)  T lymphocytes act by ingesting foreign substances.
    C)  Lymphoid tissue is predominantly reticular connective tissue.
    D)  Lymphoid macrophages secrete antibodies into the blood.
    C)  Lymphoid tissue is predominantly reticular connective tissue.
    (this multiple choice question has been scrambled)
  42. Lymphoid tissue that appears as a swelling of the mucosa in the oral cavity is called a(n)
    A)  Peyer's patch
    B)  thymus
    C)  tonsil 
    D)  appendix 
    C)  tonsil
    (this multiple choice question has been scrambled)
  43. Which of the following is not a mucosa‐associated lymphatic tissue?
    A)  appendix 
    B)  Peyer's patch
    C)  tonsil 
    D)  thymus
    D)  thymus
    (this multiple choice question has been scrambled)
  44. Peyer's patches are found in the ________. 
    A)  duodenum of the small intestine
    B)  jejunum of the small intestine
    C)  ileum of the small intestine
    D)  large intestine
    C)  ileum of the small intestine
    (this multiple choice question has been scrambled)
  45. Lymph capillaries are absent in all but which of the following?
    A)  digestive organs
    B)  CNS
    C)  bone marrow 
    D)  bones and teeth 
    A)  digestive organs
    (this multiple choice question has been scrambled)
  46. What is a bubo? 
    A)  a lobe of the spleen 
    B)  an infected lymph node 
    C)  an infected Peyer's patc
    D)  a wall in a lymph node
    B)  an infected lymph node
    (this multiple choice question has been scrambled)
  47. The thymus is the only lymphoid organ that does not
    A)  have a cortex and medulla 
    B)  have lymphocytes
    C)  directly fight antigens
    D)  produce hormones 
    C)  directly fight antigens
    (this multiple choice question has been scrambled)
  48. Large clusters of lymph nodes occur in all of the following locations except the ________.
    A)  inguinal region 
    B)  cervical region
    C)  lower extremities 
    D)  axillary region
    C)  lower extremities
    (this multiple choice question has been scrambled)
  49. Digestive tract‐associated lymphatic tissue includes all of the following except
    A)  palatine tonsils
    B)  lingual tonsils 
    C)  Peyer's patches 
    D)  islets of Langerhans
    D)  islets of Langerhans
    (this multiple choice question has been scrambled)
  50. \Which of the following is not a method that maintains lymph flow?
    A)  valves in lymph vessel walls 
    B)  smooth muscle contraction
    C)  breathing 
    D)  skeletal muscle contraction
    B)  smooth muscle contraction
    (this multiple choice question has been scrambled)
  51. The tonsils located at the base of the tongue are the
    A)  lingual tonsils
    B)  palatine tonsils
    C)  Peyer's tonsils 
    D)  pharyngeal tonsils 
    A)  lingual tonsils
    (this multiple choice question has been scrambled)
  52. Which of the following is not a normal component of lymph? 
    A)  red blood cells
    B)  ions
    C)  water 
    D)  plasma proteins 
    A)  red blood cells
    (this multiple choice question has been scrambled)
  53. A sentinel node is ________. 
    A)  the first node at the junction of all the lumbar trunks
    B)  a small node in the spleen
    C)  the first node to receive lymph from an area suspected to be cancerous
    D)  a lymph node found in the intestinal lamina propria
    C)  the first node to receive lymph from an area suspected to be cancerous
    (this multiple choice question has been scrambled)
  54. Which of the following are functions of lymphoid tissue?
    A)  house and provide a proliferation site for neutrophils
    B)  A and C
    C)  house and provide a proliferation site for lymphocytes
    D)  furnish an ideal surveillance vantage point for lymphocytes and macrophages
    B)  A and C
    (this multiple choice question has been scrambled)
  55. Which of the following is not a function of the lymphatic system?
    A)  transporting respiratory gases
    B)  carrying out immune responses
    C)  transporting dietary fats
    D)  draining excess interstitial fluid
    A)  transporting respiratory gases
    (this multiple choice question has been scrambled)
  56. Which of the following is not a function of lymph nodes?
    A)  produce lymphoid cells and granular WBCs
    B)  serve as antigen surveillance areas
    C)  produce lymph fluid and cerebro‐spinal fluid
    D)  act as lymph filters and activate the immune system
    C)  produce lymph fluid and cerebro‐spinal fluid
    (this multiple choice question has been scrambled)
  57. The ________ are the simplest lymphoid organs and are found at the entrance to the pharynx
    Tonsils
  58. The appendix, tonsils, and Peyer's patches are examples of ________.
    Malt
  59. Highly specialized lymph capillaries called ________ are present in the villi of the intestinal mucosa.
    Lacteals
  60. The thoracic duct of the lymphatic system empties into the
    Left subclavian vein
  61. Tonsils have blind‐ended structures called ________.
    Crypts
  62. Hassall's corpuscles are always found in the lighter‐colored ________ regions of the thymus.
    Medullary
  63. The ________ pulp of the spleen forms cuffs around the central arteries.
    white
  64. Lymphatic ________ are formed from the union of the largest collecting vessels.
    Trunks

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