Multiple Choice
Which of the following is not a secondary lymphatic organ?
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20. The Lymphatic System
Secondary Lymphoid Organs: Lymph Nodes
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Which of the following structures is not associated with lymph nodes?
A
Afferent lymphatic vessels
B
Spleen
C
Lymphatic sinuses
D
Efferent lymphatic vessels
Verified step by step guidance1
Understand the function and structure of lymph nodes. Lymph nodes are small, bean-shaped structures that are part of the lymphatic system. They filter lymph fluid and contain immune cells that help fight infection.
Identify the components associated with lymph nodes. These include afferent lymphatic vessels, lymphatic sinuses, and efferent lymphatic vessels.
Afferent lymphatic vessels bring lymph fluid into the lymph node, where it is filtered.
Lymphatic sinuses are spaces within the lymph node where lymph fluid is filtered and immune responses can occur.
Efferent lymphatic vessels carry filtered lymph fluid away from the lymph node. The spleen, however, is a separate organ that filters blood, not lymph, and is not directly associated with lymph nodes.
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