WHAT IS THE FUNCTION OF THE LYMPHATIC SYSTEM?
The circulatory (blood) system is comprised of two separate components: the venous system which returns blood to the heart, so that it can pass through the lungs to get oxygen, and the arterial system which delivers this oxygenated blood to the tissues. The lymphatic system, however, works on a one-way principle, the purpose of which is to drain lymphatic fluids from the tissues, where it collects. Lymphatic fluid, also called “lymph,” consists of four components: protein, water, dead cells and toxins, and some fats. Approximately half of the total protein found in the blood and 1-2 liters of water escape from the bloodstream into the tissues each day and are returned to the bloodstream through the lymph. If the lymphatic system did not return this fluid to the bloodstream, it would collect in the tissues (such as the feet or legs) resulting in swelling. In addition, the lymphatic vessels of the intestines are the only location capable of absorption of certain fatty acids. Finally, the
