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How does interstitial fluid or tissue fl...

How does interstitial fluid or tissue fluid from ?

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

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding Interstitial Fluid**: Interstitial fluid, also known as tissue fluid, is the fluid that surrounds the cells in tissues. It plays a crucial role in the exchange of materials between blood and tissues. 2. **Formation of Interstitial Fluid**: The primary way interstitial fluid is formed is through the leakage of fluid from blood vessels. This leakage occurs due to the pressure exerted by the blood within the capillaries, which forces some plasma (the liquid component of blood) out into the surrounding tissue spaces. 3. **Role of Interstitial Fluid**: Once formed, interstitial fluid facilitates the exchange of essential substances such as oxygen, nutrients (like amino acids and fatty acids), and salts from the blood to the tissues. Conversely, it helps in transporting waste products like carbon dioxide and water from the tissues back into the blood. 4. **Evaluating Other Options**: - **Absorption of Fats into Intestinal Villi**: This process is related to digestion and does not contribute to the formation of interstitial fluid. - **Filtration of Blood Across the Kidney Membrane**: This process is involved in urine formation and does not directly relate to the formation of interstitial fluid. - **All of the Above**: Since the other two options are incorrect, this option is also incorrect. 5. **Conclusion**: The correct answer to how interstitial fluid or tissue fluid forms is primarily through the leakage of fluid outside the blood vessels. ### Final Answer: The interstitial fluid or tissue fluid forms primarily by the leakage of fluid outside the blood vessels. ---
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