What fluid does the lymphatic system carry?

The lymphatic system is responsible for transporting a fluid known as lymph. Lymph is a clear, pale-yellow fluid that plays a crucial role in the body's immune function and in maintaining fluid balance within the tissues. It is formed from interstitial fluid, which is the fluid that exists between cells in tissues. As interstitial fluid enters the lymphatic capillaries, it becomes lymph and is subsequently transported through the lymphatic vessels.

In addition to carrying fluids, lymph also contains immune cells, particularly lymphocytes, which are vital for the immune response. This makes the lymphatic system integral not only for fluid balance but also for defending the body against pathogens. Understanding the function and composition of lymph is essential for appreciating how the lymphatic system supports overall health.