MICROANATOMY

Detailed explanation-1: -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-2: -Lymphatic capillaries are closed at one end. They contain a mini-valve that lets interstitial fluid flow into but not out of them. Lymphatic capillaries consist of: Endothelial cells, which line the capillary walls.