24

Question 1

What are lymph nodes (LNs)?

Answer 1

Lymph nodes are organized collections of lymphatic tissue permeated by lymph channels.

Question 2

What do lymph nodes contain and what is their function?

Answer 2

Lymph nodes contain lymphocytes and filter the lymph.

Question 3

How do lymph nodes respond to bacterial infection?

Answer 3

Lymph nodes trap bacteria drained from an infected area and contain reticuloendothelial cells and phagocytic cells (macrophages) that ingest these bacteria.