Multiple choice general knowledge history

The accumulation of what gas in the bloodstream produces the symptoms of bends, a disease caused by rapid decrease of the atmospheric pressure?

  1. Carbon Dioxide

  2. Carbon Monoxide

  3. Oxygen

  4. Nitrogen
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bends (decompression sickness) occurs when nitrogen gas dissolved in blood forms bubbles due to rapid pressure decrease. During deep diving, nitrogen accumulates in tissues under high pressure. If ascent is too fast, dissolved nitrogen cannot be eliminated gradually and forms bubbles in bloodstream, causing pain and tissue damage.

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