Part 1 of Essay
In the United States, nearly 16 million Americans suffer from a disease that accounts for approximately 105,000 deaths annually. This disease which has no cure, is known as (COPD). COPD is a disease of the lungs, which is caused the blocking of the airways in the lungs. It is a group of diseases that includes chronic bro ....

Part 2 of Essay
.... into the bronchial tubes. The bronchial tubes or passages, look like trees, and branch out into smaller and smaller airways the further they go further into the lungs. All along the breathing passages, tiny protective hairs called cilia help keep the dust and other pollutants from entering your lungs. These airways end in tiny air sacs known as alveoli. The alveoli transfer oxygen from the air you inhale directly into the bloodstream. Chronic bronchitis is one of the major lung diseases that underlie COPD ....