Question

_________ is a disorder/disease related with the bubbling of $N_2$ in the blood resulting in pain or severe problems.

• A. Caisson's disease
• B. Cheyne-Stokes respiration
• C. Hypopnea
• D. Asthma

Answer 1

The correct option is A

Caisson's disease

We breathe a mixture of two major gases, nitrogen (78%) and oxygen (21%). Unlike oxygen, nitrogen is a biologically inert gas. For this reason, most of the nitrogen we inhale is expelled when we exhale, but some of it is dissolved into the blood and other tissues. During a scuba dive however, the lungs take in more nitrogen than usual. If a diver resurfaces too quickly, the excess nitrogen forms bubbles that can compress nerves, obstruct arteries, veins, and lymphatic vessels, and trigger harmful chemical reactions in the blood. This is called Caisson's disease or decompression sickness.