Diver Life Support System (DLSS) Maintenance Practice Exam 2025 - Free DLSS Maintenance Practice Questions and Study Guide

The term "decompression" in diving specifically refers to the process of allowing a diver to safely ascend to the surface in a controlled manner to avoid decompression sickness, often referred to as "the bends." During a dive, a diver's body absorbs gases from the air they breathe, primarily nitrogen, which can dissolve into bodily tissues under high pressure. As the diver ascends, the pressure decreases, and if this ascent is too rapid, the nitrogen can come out of solution and form bubbles in the tissues and bloodstream, leading to potentially serious health issues.

To minimize the risk of decompression sickness, divers follow a specific ascent profile that may include staged stops at certain depths. These stops allow excess nitrogen to be expelled from the body slowly and safely, thereby reducing the chances of developing symptoms related to decompression sickness. This process is critical for the health and safety of divers as they transition from high-pressure environments to normal atmospheric pressure.

The other options refer to unrelated concepts in diving. For instance, rapidly ascending could actually increase the risk of decompression sickness rather than preventing it, while increasing pressure is more about absorption of gases which occurs during descent rather than during the ascent. Stabilizing equipment underwater is important for safety and operational efficiency but does not pert