Question

question 8 of 10
why do doctors check for swollen lymph nodes?
a. lymph nodes are the site of white blood cell production.
b. it is impossible to immunize the lymph nodes.
c. memory cells are stored in the lymph nodes.
d. bacteria and viruses mostly attack the lymph nodes.

Explanation:

Lymph nodes are part of the immune system. Memory cells, which help in faster immune response upon re - exposure to pathogens, are stored here. Swollen lymph nodes can indicate an immune response (e.g., fighting an infection).

• Option A: White blood cells are mainly produced in bone marrow, not lymph nodes.
• Option B: Lymph nodes can be part of the immune response (not about immunization impossibility).
• Option D: Bacteria and viruses don't'mostly attack' lymph nodes; they can trigger immune response in lymph nodes (but not the reason for checking swollen nodes as per the key concept of memory cells).

Answer:

C. Memory cells are stored in the lymph nodes.