What is the effect of rapid decompression on the human body?

Rapid decompression has a significant and immediate impact on the human body, primarily due to the sudden loss of pressure. In high-altitude environments, the body is accustomed to a certain atmospheric pressure that allows for adequate oxygen absorption. When decompression occurs rapidly—such as in a cabin depressurization scenario—the external pressure drops quickly, leading to several physiological responses.

One of the primary effects is the reduction of available oxygen in the bloodstream, creating a condition known as hypoxia. This can lead to a loss of consciousness and other serious health compromises if not addressed immediately. Additionally, the formation of gas bubbles in body fluids, known as decompression sickness, can occur. This condition is similar to what divers experience when ascending too quickly after deep dives.

The other options do not accurately represent the phenomenon of rapid decompression. Increased power suggests a physiological enhancement, while immediate oxygenation does not occur as the body is losing pressure rather than gaining oxygen. Gradual adaptation typically refers to the body's ability to adjust to changing conditions over time, which contrasts with the immediate nature of rapid decompression.