The lungs have two primary functions: to acquire oxygen from the air, which is required for life, and to remove carbon dioxide from the body. Carbon dioxide is a byproduct of many of the chemical reactions that sustain life.
During breathing, air enters and exits the lungs. It flows in through increasingly smaller airways, finally filling tiny sacs called alveoli. Blood circulates around the alveoli through capillaries (tiny blood vessels). Where the capillaries...Read more
Anyone who's ever had an asthma attack knows about the chest tightness and why it occurs. Yet what about the chest soreness that occurs... Read more »
Source: ADAM Encyclopedia
Surgical ProceduresSurgery -- as a last resort -- may help some patients with COPD. Coverage for such procedures varies among insurance carriers. A... Read more »