The lymphatic system includes the lymph nodes, spleen and tonsils - VCE - SSCE Biology - Question 23 - 2017 - Paper 1
Question 23
The lymphatic system includes the lymph nodes, spleen and tonsils.
In these particular organs
A. clotting factors are inactivated to help seal a wound.
B. clonal sel... show full transcript
Worked Solution & Example Answer:The lymphatic system includes the lymph nodes, spleen and tonsils - VCE - SSCE Biology - Question 23 - 2017 - Paper 1
Step 1
A. clotting factors are inactivated to help seal a wound.
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Answer
This statement is incorrect in the context of the lymphatic system, as clotting factors are not primarily associated with lymphatic organs but rather with the blood clotting processes that occur throughout the body.
Step 2
B. clonal selection and proliferation of B cells occurs.
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This statement is accurate. The lymphatic system plays a critical role in the immune response, specifically in the activation of B cells, which undergo clonal selection and proliferation when they encounter their specific antigen in the lymph nodes.
Step 3
C. non-self antigens are identified by red blood cells.
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This statement is also incorrect. Non-self antigens are primarily recognized by white blood cells, particularly B and T lymphocytes, rather than by red blood cells, which mainly function in oxygen transport.
Step 4
D. the initial response to an allergen is triggered.
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This statement can be seen as partially correct since the lymphatic system is involved in allergic responses, but the initial triggering of an allergic response is generally mediated by other immune cells, such as mast cells and IgE antibodies.
