nyirokcsomónyílás

Nyirokcsomónyílás refers to the opening or drainage point of a lymph node. Lymph nodes are small, bean-shaped organs that are part of the lymphatic system, which helps the body fight infection and disease. The lymphatic system collects excess fluid, called lymph, from tissues throughout the body and returns it to the bloodstream. Lymph nodes filter this lymph, removing waste products, damaged cells, and infectious agents.

Within a lymph node, afferent lymphatic vessels carry lymph into the node, where it passes through a network of sinuses and lymphatic tissue. The filtered lymph then exits the lymph node through efferent lymphatic vessels. The point where these efferent vessels emerge is considered the nyirokcsomónyílás. This opening allows for the continuous flow of lymph through the lymphatic network, facilitating its filtration and the immune response.

The structure and number of these openings can vary between different lymph nodes and in different parts of the body. Understanding the anatomy of lymph node drainage is important in fields such as medicine and immunology, particularly in the study of cancer metastasis, where cancer cells can spread through the lymphatic system via these drainage pathways. Swollen or abnormal lymph nodes, sometimes referred to as lymphadenopathy, can indicate an underlying infection or disease process affecting the node's filtering function and its drainage.