The blocking of capilaries due to sudden release of bubbles of `N_2` gas in blood is known as

Options

A. Bends
B. Blends
C. Mends
D. All of these

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the condition that occurs when there is a sudden release of nitrogen gas bubbles in the blood, leading to the blockage of capillaries.

2. **Identifying the Condition**: The condition described is known as "decompression sickness." It is commonly associated with scuba diving.

3. **Mechanism of Decompression Sickness**:
- When scuba divers dive underwater, they breathe in air that contains nitrogen along with oxygen.
- Under high pressure, nitrogen is highly soluble and dissolves in the diver's blood and tissues.
- As the diver ascends to the surface, the pressure decreases rapidly, causing the nitrogen that was dissolved in the blood to come out of solution.

4. **Formation of Bubbles**: The sudden decrease in pressure leads to the formation of nitrogen gas bubbles in the bloodstream. These bubbles can block capillaries, which are small blood vessels.

5. **Effects of the Condition**: The bubbles can affect various parts of the body, including the lungs, heart, skin, and brain. This blockage can lead to serious health issues and can even be fatal.

6. **Terminology**: The specific term for the condition is "decompression sickness," but it is also referred to as "the bends" or "BENDS."

**Final Answer**: The blocking of capillaries due to the sudden release of bubbles of nitrogen gas in blood is known as "decompression sickness" or "the bends."

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