Question

How does interstitial fluid or tissue fluid form?

• A. By the leakage of fluid outside the blood vessels
• B. By the absorption of fats into the intestinal villi.
• C. By the filtration of blood across the kidney membrane.
• D. All of the above

Answer 1

Answer: (A)

As the blood passes through the capillaries in tissues, some water along with many small water-soluble substances move out into the spaces between the cells of tissues leaving the larger proteins and most of the formed elements in the blood vessels. This fluid released out is called the interstitial fluid or tissue fluid.