Lymphatic system

Arteriole (from heart)

Blood capillary

Direction of lymph flow in capillary

Fluid entering lymphatic capillary

Fluid entering lymphatic capillary (right photo)

Lymph

Lymphatic capillary

Overlapping endothelial cell

Tissue cells

To venous system

Valve closed (backflow of lymph- is prevented)

Valve open (lymph flows forward)

Venule (to heart)