Capillary filtration is the movement of fluids and other molecules from the bloodstream into the surrounding tissues. It is one of the forces responsible for the exchange of fluids and other substances between the extracellular and intracellular spaces. In order to maintain homeostasis, it is important to keep the balance between capillary filtration and reabsorption.

There are several factors that can affect capillary filtration, such as the hydrostatic pressure, osmotic pressure, and the surface area of the capillary. Here are some of the factors that can cause a decrease in capillary filtration:

• Increasing Hydrostatic Pressure: Increasing the pressure in the capillaries can reduce the movement of fluid from the bloodstream into the surrounding tissues. This can be done by increasing the heart rate or by elevating the body’s position.
• Decreasing Osmotic Pressure: Osmotic pressure is the force that pulls water and other molecules from the blood into the surrounding tissues. If the osmotic pressure is decreased, then the filtration of fluid from the bloodstream into the tissues would be reduced.
• Decreasing Surface Area of the Capillary: Decreasing the surface area of the capillary will reduce the amount of fluid moved from the bloodstream into the tissues. This can be done by constricting the capillary or by reducing the number of capillaries in an area.
• Increasing the Thickness of the Capillary Wall: The thicker the capillary wall, the less fluid will be able to pass through. This can be achieved by increasing the thickness of the capillary endothelium.

In conclusion, there are several factors that can reduce capillary filtration. These include increasing hydrostatic pressure, decreasing osmotic pressure, decreasing surface area of the capillary, or increasing the thickness of the capillary wall. All of these techniques can help to maintain homeostasis and ensure that the body is functioning properly.