nyirokszövetcsoportjait

Nyirokszövetcsomó, commonly referred to as lymph nodes, are small, bean-shaped organs scattered throughout the body. They are an integral part of the lymphatic system, which plays a crucial role in immune defense and fluid balance. These nodes are interconnected by a network of lymphatic vessels, forming a widespread surveillance system.

The primary function of lymph nodes is to filter lymph, a clear fluid that circulates throughout the body. As lymph flows through the nodes, it passes by specialized immune cells, primarily lymphocytes such as B cells and T cells, and macrophages. These cells are responsible for identifying and destroying foreign substances like bacteria, viruses, and other pathogens, as well as abnormal cells such as cancer cells.

When an infection or inflammation occurs, lymph nodes in the affected area may enlarge and become tender. This swelling is a sign that the immune system is actively responding to a threat. The enlarged nodes are often referred to as "swollen glands."

Lymph nodes are strategically located in areas such as the neck, armpits, and groin. They are also found deeper within the body, surrounding organs like the intestines and lungs. Their widespread distribution ensures that the body's immune system can effectively monitor for and respond to potential dangers throughout the entire organism. Understanding the role of lymph nodes is fundamental to comprehending how the body defends itself against disease.