What is the lymphatic system?

The lymphatic system is a network of specialized valved vessels that drain interstitial fluid (lymph). The lymphatic system is also responsible for the transport of chylomicrons (vesicles that have lipids) made after the absorption of fats by the intestinal epithelium.

In the way of the lymphatic vessels there are ganglial-like structures called lymph nodes that have many cells of the immune system. These cells filter impurities and destroy microorganisms and cellular wastes. The lymphatic vessels drain to two main lymphatic vessels, the thoracic duct and the right lymphatic duct, that in their turns drain into tributary veins of the better vena cava.

The Circulatory System - Image Diversity: lymphatic system