What term describes the accumulation of nitrogen in the body under pressure?

The term that describes the accumulation of nitrogen in the body under pressure is decompression illness. When a diver descends, the increase in pressure causes nitrogen, which is a component of the breathing gas, to dissolve into the tissues and blood. If a diver ascends too quickly or does not allow sufficient time for the nitrogen to be safely eliminated from the body, it can form bubbles in the body, leading to various symptoms associated with decompression illness.

This condition is often referred to as "the bends," as it can cause joint pain, dizziness, and other serious health issues. Understanding the dynamics of nitrogen accumulation and the importance of controlled ascent is crucial for divers to minimize the risk of decompression illness during and after dives.