So what happens is when the blood plasma leaves the capillaries and enters this cell tissue area, that brings the nutrients, such as glucose and fats and amino acids and oxygen to the cells of that surrounding tissue. And at the same time as that fluid travels along the tissue space, along the interstitial tissue, it picks up those waste products that are secreted by the cell, such as carbon dioxide and ammonia. And once the fluid is on the Venuel side, on this side of the capillary, because the zmotic pressure is now greater than the hydrostatic pressure, the blood rushes back into the capillary of our body. And now the deoxygenated blood that contains the waste products travels along the Venuel, then to the veins and finally into the heart of our body. Now, it turns out that osmotic pressure on the Venuel side is not that much higher than the hydrostatic pressure. And what that means is not all of that blood plasma that left the capillary actually returns back into that capillary on the Venuel side.