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After it travels through the lymphatic system, the lymph nodes filter lymph, trapping bacteria and other disease-causing microorganisms in the fluid.Lymphatic vessels open into veins and the fluid re-enters the bloodstream.As lymph flows through the lymphatic system, it passes through small knobs of tissue called lymph nodes. Lymph nodes filter the lymph, trapping bacteria and other microorganisms that cause disease. When the body is fighting an infection, the lymph nodes enlarge. If you've ever had "swollen glands" when you've been sick, you've actually had swollen lymph nodes.
The lymph nodes certainly could leak fluid. This happens quite frequently if the lymph nodes are infected and go untreated.
You have about 500 lymph nodes are there in your body. There are about 300 lymph nodes in your neck region only. It is not possible to remove them all. When you remove few lymph nodes, it does not affect your health adversely.
In your blood from your arteries flows into your capillaries. Most of that returns to your heart through your heart. Some returns through the lymph system. The lymph system carries lymph or a fraction of your blood through your system checking for pathogens. It brings them to the lymph nodes. The nodes check the lymph for infection. If the lymph nodes find infection, they start producing antibodies against the infection and inform the rest of the body that infection exist. They sometimes become inflamed when they collect bacteria faster than they can destroy it. Still, they stop it rather than let it go on through the body. They let the lymph go from the lymph nodes back to the veins and back to the heart to recirculate.
Lymph nodes
tiny vessels
The lymph capillary in the right arm channels excess fluid from plasma. This fluid flows in the direction of the lymph nodes in the axilla through larger lymphatic vessels where the fluid becomes lymph.
lymph-nodes
Lymph nodes
On it's way lymph passes through masses of tissue called lymph nodes
spleen, tonsils, lymph nodes, heart, thymus,