Question

Define lymph nodes.

Answer 1

Lymph node

1. Lymph node is a small bean-shaped structure that is part of the body's immune system.
2. At various points along the lymph vessels are the lymph nodes.
3. Lymph nodes filter substances that travel through the lymphatic fluid, and they contain lymphocytes (white blood cells) that help the body fight infection and disease.
4. All tissues and cells in the body excrete lymphatic fluid, or lymph, in order to eliminate waste products.
5. The lymph then travels through vessels in the lymphatic system and passes through lymph nodes for filtering.
6. Lymph nodes contain lymphocytes that attack and destroy bacteria and other harmful substances in the fluid.
7. Upon encountering bacteria or damaged cells, lymph nodes destroy them and turn them into a waste product.