What is the primary function of the lymphatic vessels?

The primary function of lymphatic vessels is to transport lymph fluid back to the bloodstream. Lymphatic vessels play a crucial role in the immune system by collecting excess interstitial fluid that accumulates in tissues and returning it to the circulatory system. This process helps maintain fluid balance in the body and supports the function of the immune system.

Lymph itself contains a variety of substances, including proteins, electrolytes, and lymphocytes, which are essential for immune responses. As lymph travels through the lymphatic vessels, it passes through lymph nodes, where the lymphocytes can encounter pathogens, thus contributing to the body’s defense mechanisms. This transport function is vital for the overall health of the immune system and helps ensure that the body can respond effectively to infections and other immune challenges.