How does depth affect the body’s absorption of gases?

At greater depths, the pressure surrounding the diver increases significantly. This heightened pressure leads to an increase in the partial pressure of gases, which in turn enhances the body’s absorption of those gases, particularly nitrogen. According to Boyle's Law, the solubility of gases in a liquid increases with pressure. In diving, as a diver descends and the pressure rises, nitrogen from the breathing gas becomes more soluble in body tissues. This physiological principle is crucial when considering the risks of decompression sickness, or "the bends," which can occur if a diver ascends too quickly after being at a depth where nitrogen was absorbed in higher quantities.

Understanding this relationship between depth and gas absorption is vital for safe diving practices and helps explain why divers must adhere to specific ascent rates and decompression stops after spending time at significant depths.