1. 20
The Lymphatic System and Lymphoid Organs and Tissues

2. Lymphatic vessels _______.
collect excess fluid from interstitial spaces
drain blood from lymph nodes
are part of the venous system
are built like arteries
Answer: a. collect excess fluid from interstitial spaces
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3. Lymphatic vessels _______.
collect excess fluid from interstitial spaces
drain blood from lymph nodes
are part of the venous system
are built like arteries
Answer: a. collect excess fluid from interstitial spaces
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4. Lymphatic capillaries owe their permeability to the presence of _______.
an open end that siphons fluid from the interstitial fluid
minivalves in their walls
tight junctions between adjacent cells
proteins in the lymph fluid
Answer: b. minivalves in their walls
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5. Lymphatic capillaries owe their permeability to the presence of _______.
an open end that siphons fluid from the interstitial fluid
minivalves in their walls
tight junctions between adjacent cells
proteins in the lymph fluid
Answer: b. minivalves in their walls
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6. Which of the following represents a logical sequence of structures that contribute to the return of fluid into the blood via the lymphatic system?
Blood capillaries, arteries, lymphatic vessels, subclavian vein
Arteries, lymphatic vessels, blood capillaries, subclavian vein
Arteries, blood capillaries, lymphatic vessels, subclavian vein
Subclavian vein, arteries, blood capillaries, lymphatic vessels
Answer: c. Arteries, blood capillaries, lymphatic vessels, subclavian vein
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7. Which of the following represents a logical sequence of structures that contribute to the return of fluid into the blood via the lymphatic system?
Blood capillaries, arteries, lymphatic vessels, subclavian vein
Arteries, lymphatic vessels, blood capillaries, subclavian vein
Arteries, blood capillaries, lymphatic vessels, subclavian vein
Subclavian vein, arteries, blood capillaries, lymphatic vessels
Answer: c. Arteries, blood capillaries, lymphatic vessels, subclavian vein
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8. Which of the following contribute(s) to the flow of lymph through lymphatic vessels?
The pumping of the heart
The milking action of skeletal muscle contraction
Pressure changes in the thorax that result from breathing
Both b and c
Answer: d. Both b and c
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9. Which of the following contribute(s) to the flow of lymph through lymphatic vessels?
The pumping of the heart
The milking action of skeletal muscle contraction
Pressure changes in the thorax that result from breathing
Both b and c
Answer: d. Both b and c
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10. Which of the following would the body perceive as an antigen?
Bacteria
Virus
Mismatched red blood cell
All of the above
Answer: d. All of the above
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11. Which of the following would the body perceive as an antigen?
Bacteria
Virus
Mismatched red blood cell
All of the above
Answer: d. All of the above
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12. An advantage to having reticular connective tissue present in lymph nodes is that ________.
the loose organization of reticular connective tissue provides niches for macrophages and lymphocytes
lymph filters through the nodes and is exposed to lymphocytes and macrophages
lymphocytes cycle to various areas of the body and back to lymph nodes
all of the above take place
Answer: d. all of the above take place
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13. An advantage to having reticular connective tissue present in lymph nodes is that ________.
the loose organization of reticular connective tissue provides niches for macrophages and lymphocytes
lymph filters through the nodes and is exposed to lymphocytes and macrophages
lymphocytes cycle to various areas of the body and back to lymph nodes
all of the above take place
Answer: d. all of the above take place
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14. Lymph tends to stall inside lymph nodes. This is due to _______.
small-diameter spaces within the medulla
the large volume of lymph entering the node
fewer efferent lymphatic vessels than afferent lymphatic vessels
fewer afferent lymphatic vessels than efferent lymphatic vessels
Answer: c. fewer efferent lymphatic vessels than afferent lymphatic vessels
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15. Lymph tends to stall inside lymph nodes. This is due to _______.
small-diameter spaces within the medulla
the large volume of lymph entering the node
fewer efferent lymphatic vessels than afferent lymphatic vessels
fewer afferent lymphatic vessels than efferent lymphatic vessels
Answer: c. fewer efferent lymphatic vessels than afferent lymphatic vessels
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16. Buboes are inflamed, swollen _______.
tonsils
thymus
spleen
lymph nodes
Answer: d. lymph nodes
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17. Buboes are inflamed, swollen _______.
tonsils
thymus
spleen
lymph nodes
Answer: d. lymph nodes
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18. _______ can enter lymphatic capillaries.
Bacteria
Large proteins
Interstitial fluid
All of the above
Answer: d. All of the above
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19. _______ can enter lymphatic capillaries.
Bacteria
Large proteins
Interstitial fluid
All of the above
Answer: d. All of the above
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20. The ______ is the largest lymphoid organ.
lymph node
spleen
thymus
tonsil
Answer: b. spleen
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21. The ______ is the largest lymphoid organ.
lymph node
spleen
thymus
tonsil
Answer: b. spleen
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22. Red pulp of the spleen is most concerned with _______, while white pulp is most concerned with _________.
immunity; new red blood cell formation
filtering lymph; T lymphocyte formation
blood filtering; immunity
urine formation; blood filtering
Answer: c. blood filtering; immunity
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23. Red pulp of the spleen is most concerned with _______, while white pulp is most concerned with _________.
immunity; new red blood cell formation
filtering lymph; T lymphocyte formation
blood filtering; immunity
urine formation; blood filtering
Answer: c. blood filtering; immunity
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24. Which of the following lymphoid tissues removes defective red blood cells from the blood?
Lymph node
Thymus
Spleen
Peyer's patches
Answer: c. Spleen
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25. Which of the following lymphoid tissues removes defective red blood cells from the blood?
Lymph node
Thymus
Spleen
Peyer's patches
Answer: c. Spleen
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26. The thymus is important for _______.
T lymphocyte maturation
removal of foreign antigens
B lymphocyte maturation
secretion of hormones that promote B lymphocyte immunocompetence
Answer: a. T lymphocyte maturation
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27. The thymus is important for _______.
T lymphocyte maturation
removal of foreign antigens
B lymphocyte maturation
secretion of hormones that promote B lymphocyte immunocompetence
Answer: a. T lymphocyte maturation
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28. Tonsils promote memory of pathogens by ________.
secreting antibodies into the blood
trapping food particles to support bacterial growth
trapping pathogens so lymphocytes can encounter them and develop immune cells with memory
producing B lymphocytes
Answer: c. trapping pathogens so lymphocytes can encounter them and develop immune cells with memory
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29. Tonsils promote memory of pathogens by ________.
secreting antibodies into the blood
trapping food particles to support bacterial growth
trapping pathogens so lymphocytes can encounter them and develop immune cells with memory
producing B lymphocytes
Answer: c. trapping pathogens so lymphocytes can encounter them and develop immune cells with memory
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30. Which lymphoid organ is not derived from mesodermal mesenchymal cells?
Lymph nodes
Thymus
Spleen
Lymphatic vessels
Answer: b. Thymus
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31. Which lymphoid organ is not derived from mesodermal mesenchymal cells?
Lymph nodes
Thymus
Spleen
Lymphatic vessels
Answer: b. Thymus
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