Tissue Fluid

Tissue Fluid

1. Glucose

   • Amino acids
     • Oxygen etc.

2. Its formation

   • 1. Firstly, blood flows through the artery into an arteriole.
     • 2. Then, it flows into the arterial end (Ae) of the capillary.
       • 3. Since the walls get narrower, the hydrostatic pressure is higher at the Ae of the capillary, though there is also a force from the tissue fluid on the capillary but this is smaller.
         • 4. So, the fluid from the blood plasma are forced in, to form the tissue fluid, outside the cells.
           • 5. This is called ultrafiltration.
             • 6. As the blood plasma carries on flowing towards the venule end of the capillary, the Water potential decreases, as there are more proteins.
               • 7. This results in water flowing into the capillary by osmosis
                 • 8. Any excess tissue fluid gets drained into the tissue fluid.

3. Tissue fluid takes in...

   • CO2
     • Water, urea