Lymph nodes are small, bean-shaped structures located throughout the body, but they are more concentrated near and within the trunk. Key clusters of lymph nodes are found in the neck (cervical lymph nodes), armpits (axillary lymph nodes), groin (inguinal lymph nodes), chest, abdomen, and behind the ears. These nodes filter lymph fluid, which carries nutrients and removes harmful substances such as bacteria, viruses, and abnormal cells. Other lymph nodes are situated near major blood vessels, such as the paraaortic and tracheobronchial lymph nodes, and most are located adjacent to major structures within the trunk. The central nervous system does not contain lymph nodes, but lymph from this area drains into deep cervical lymph nodes in the neck.
In summary, lymph nodes are primarily found:
- In the neck
- Under the arms (armpits)
- In the groin area
- Around the chest and abdomen
- Behind the ears
These lymph nodes form clusters and are part of the lymphatic system essential for filtering lymph and supporting immune function.
