Multiple Choice
Which type of blood cell is primarily responsible for the immune response?
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41. Immune System
Immune System
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Which of the following is a role of lymph nodes in the immune system?
A
They filter lymph to remove pathogens and debris.
B
They secrete digestive enzymes into the small intestine.
C
They produce insulin to regulate blood sugar.
D
They generate electrical impulses for muscle contraction.
Verified step by step guidance1
Understand the function of lymph nodes in the immune system: Lymph nodes are small, bean-shaped structures that are part of the lymphatic system. Their primary role is to filter lymph, a fluid containing white blood cells, to remove pathogens, debris, and abnormal cells.
Eliminate incorrect options based on biological knowledge: Lymph nodes do not secrete digestive enzymes into the small intestine, as this is the role of the pancreas and other digestive organs.
Eliminate the option related to insulin production: Insulin is produced by the pancreas, not lymph nodes, and is involved in regulating blood sugar levels.
Eliminate the option related to generating electrical impulses: Electrical impulses for muscle contraction are generated by neurons, not lymph nodes.
Confirm the correct answer: The role of lymph nodes in the immune system is to filter lymph to remove pathogens and debris, supporting the body's defense mechanisms.
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