What Do Lymph Nodes Do?
Reviewed: Dr. Gromatzky
2. Lymphatic System
There are two circulatory systems of fluid in the body. The best known of those is the cardiovascular system, which carries oxygen and nutrient-rich blood. The other, less well-known system is the lymphatic system. This is so called because the system circulates lymph.
Instead of blood vessels, there are lymph vessels that help to circulate lymph around the body. While the cardiovascular system has organs and glands serving it, so does the lymphatic system. One of the key differences is that the lymphatic system does not have a pump, and the fluid is circulated with help from valves and contractions of the muscles.
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