Answer:
As the interstitial hydrostatic pressure increases, more fluid is driven into the lymphatic capillaries.The lymphatic system plays an important role in regulating the fluid balance in the body by collecting excess interstitial fluid and returning it to the bloodstream.
Lymphatic capillaries are tiny vessels that are present throughout the body and are involved in this process.When the interstitial hydrostatic pressure increases, there is an increased force that pushes fluid out of the blood vessels and into the surrounding tissues. This excess fluid then enters the lymphatic capillaries due to the pressure gradient between the interstitial fluid and the lymphatic vessels. The lymphatic vessels then transport this excess fluid (now called lymph) back into the bloodstream.
Therefore, an increase in interstitial hydrostatic pressure leads to an increased flow of fluid into the lymphatic capillaries, helping to maintain the fluid balance in the body.