👉 Tubular fluid, also known as lymph, is a vital component of the circulatory and immune systems. Unlike blood, which is produced by the heart and flows through a closed network of vessels, tubular fluid circulates through a loose network of channels and vessels called lymphatic vessels. These vessels are found in tissues throughout the body and collect interstitial fluid, which is the fluid that surrounds cells. The fluid contains water, proteins, waste products, and immune cells like lymphocytes. Lymphatic vessels eventually return this fluid to the bloodstream through small nodes called lymphatics, where it is filtered and returned to circulation, playing a crucial role in maintaining fluid balance, absorbing fats from the digestive system, and supporting immune function.
