Lymphatic System

• Lymphatic system: Circulation of body fluids, and the production of lymphocytes.
• Lymph node contains many lymphocytes which filter lymph.
• Tissue fluid: made when plasma is squeezed out of capillaries.
• Substances diffuse between cells and tissue fluid.
• Lymph vessels collect lymph and return it to the blood.
• Tissue fluid returns to the capillaries by osmosis.