GENERAL HISTOLOGY

Detailed explanation-1: -There is no pump in the lymphatic system like the heart in the cardiovascular system. The pressure gradients to move lymph through the vessels come from the skeletal muscle action, respiratory movement, and contraction of smooth muscle in vessel walls.

Detailed explanation-2: -Lymphatic vessels collect and filter lymph (at the nodes) as it continues to move toward larger vessels called collecting ducts. These vessels operate very much like your veins do: They work under very low pressure, have a series of valves in them to keep the fluid moving in one direction.

Detailed explanation-3: -As lymph capillaries collect interstitial fluid from tissues, the pressure in the lymph capillaries grows. This increasing pressure moves the lymph fluid forward toward the heart. Everywhere in your body, your lymphatic capillaries collect lymph and move it into larger lymphatic vessels.

Detailed explanation-4: -The contraction of your muscles becomes the pump that helps the fluid get around your body. Exercise can help the lymphatic system flow more effectively and potentially help prevent infections and other diseases, like cancer.