What type of change in pressure causes the bends and why?
A) an increase in pressure, because it results in nitrogen rapidly diffusing out of the bloodstream
B) an increase in pressure, because it results in nitrogen rapidly dissolving into the bloodstream
C) a decrease in pressure, because it results in nitrogen rapidly diffusing out of the bloodstream
D) a decrease in pressure, because it results in nitrogen slowly dissolving into the bloodstream
E) The bends is not a result of pressure changes.

Question

Quizplus · Accepted Answer

The bends is caused by a decrease in pressure, because it results in nitrogen rapidly diffusing out of the bloodstream. When a diver ascends too quickly, the change in pressure causes nitrogen to come out of solution in the blood and form gas bubbles, which can block blood vessels and cause severe pain and other symptoms.

What Type of Change in Pressure Causes the Bends and Why