Lymphatic System

Lymphatic System

The Lymphatic System is a part of the immune system and vascular system, comprising a network of lymphatic vessels that carry a clear fluid called lymph directionally towards the heart. The lymphatic system was first discovered in 1652 by Thomas Bartholin.

Structure

The lymphatic system includes the lymph nodes (singular lymph node), thymus, spleen, and lymphoid tissue. The system also includes all the structures dedicated to the circulation and production of lymphocytes, which includes the bone marrow, and the lymphoid tissue associated with the digestive system.

Function

The lymphatic system has multiple interrelated functions including the transportation of white blood cells to and from the lymph nodes into the bones, and the transportation of antigen-presenting cells (APCs), such as dendritic cells, to the lymph nodes where an immune response is stimulated.

Clinical significance

Diseases and disorders of the lymphatic system are typically treated by lymphologists. These conditions can be benign, like lymphedema treatment, but can also be life-threatening, like lymphoma.

See also

• Lymphatic vessel
• Lymph node
• Lymph
• Lymphocyte
• Lymphoma
• Lymphedema

External links

• Lymphatic System at MedlinePlus

Lymphatic System Resources
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