PHED-1507EL Chapter Notes - Chapter 20: Extracellular Fluid, T Cell, The Fluid
Document Summary
The lymphatic system and lymphoid organs and tissues. The lymphatic system returns fluids that have leaked from the blood vascular system back to the blood. Lymph, the fluid contained in those vessels. Lymph nodes that cleanse the lymph as it passes through them. Lymphoid organs and tissues provide the structural basis of the immune system. These organs house phagocytic cells and lymphocytes which play essential roles in the body"s defense mechanisms and its resistance to disease. Structures include the spleen, thymus, tonsils, and other lymphoid tissues scattered throughout the body. Lymph nodes are also part of this system. Lymphatic system - hydrostatic and colloid osmotic pressures operating at capillary beds force fluid out of the blood at the arterial ends of the capillary beds and cause most of it to be reabsorbed at the venous ends. The fluid that remains behind in the tissue spaces, as a much as 3l daily, becomes part of the interstitial fluid.
