Lymph system
Lymphatic system
The Lymphatic system is a part of the vascular system and an important part of the immune system, comprising a network of lymphatic vessels that carry a clear fluid called lymph directionally towards the heart.
Structure[edit | edit source]
The lymphatic system includes the lymph nodes (singular lymph node), thymus, spleen, and lymphoid tissue. The system has both structural and immune related functions.
Lymph[edit | edit source]
Lymph is the fluid that is formed when the interstitial fluid (the fluid which lies in the interstices of all body tissues) is collected through lymph capillaries. It is then transported through larger lymphatic vessels to lymph nodes before emptying ultimately into the right or the left subclavian vein, where it mixes back with blood.
Lymph nodes[edit | edit source]
Lymph nodes are small, bean-shaped structures that produce and store cells that fight infection and disease and are a major site of B cells, T cells, and other white blood cells. Lymph nodes are located along the network of lymph vessels found throughout the body.
Function[edit | edit source]
The lymphatic system has multiple interrelated functions including the transportation of white blood cells to and from the bones and bone marrow, the transportation of antigen-presenting cells (APCs), such as dendritic cells, to the lymph nodes where an immune response is stimulated and the transportation of lymph.
Clinical significance[edit | edit source]
Diseases and disorders of the lymphatic system are typically treated by immunologists. Vascular surgeons, dermatologists, oncologists and physiatrists also get involved in treatment of various lymphatic ailments. There are also lymphedema therapists who specialize in the manual drainage of the lymphatic system.
See also[edit | edit source]
References[edit | edit source]
External links[edit | edit source]
- Lymphatic System at MedlinePlus
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