How does a diver's body adapt to increased pressure underwater?

A diver's body experiences increased pressure as they descend underwater, which affects air-filled spaces, such as lungs and sinuses. The correct understanding here is that the body compresses air-filled spaces due to this increase in pressure, in accordance with Boyle's Law.

As the diver descends, the air within these spaces becomes denser and tries to compress; however, the human body can adapt by equalizing pressure through various mechanisms, such as equalizing the ears. Moreover, under high pressure, the body can absorb gases (like nitrogen) into the tissues, which is fundamental in processes like decompression during ascent. This adaptation is crucial to prevent issues such as barotrauma or decompression sickness.

Understanding this concept helps divers realize the importance of equalization and proper ascent techniques to prevent complications related to gas absorption and pressure changes.