Question

1. Emphysema is a disease that damages alveoli. Describe how this disease would affect a persons ability to breathe. Then explain how emphysema would affect the concentration of oxygen and carbon dioxide in the bloodstream.

2. Often when a person is trying to become healthier, they will look for food labeled “fat free” or “low fat”. However, taken to an extreme, a low-fat diet could hinder some body functions. Describes the functions of lipids and how a complete lack of lipids in the diet could affect body functions.

Answer 1

1.Emphysema causes the damage to the alveoli and the lung tissues,thereafter the alveoli is not able work efficeintly to support the branchial tubes.The brachioles collapse and thus results into the accumulation of the air into lungs.The accumulated air can't be released by the expiration.The trapped air prevents the inhalation of fresh air and exhalation causes hard to breathe.

The destruction of the wall of the alveoli causes the reduced absorption(exchange) of the oxygen into the blood and release carbon dioxide from the blood.

2.The lipid functions in providing the energy source for proper body functions, helps in absorbing the fat soluble vitamins , in generating the essential fatty acid and generates the heat for the body.

The complete lack of the lipid causes the deprivation of the essential fatty acids which is essential for the reduction of cardiovascular diseases risk, inflammation and in maintaining the brain activities.