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70 year old woman retires and moves from Fort Worth, Texas to Denver,…

- - - - Each lobe houses multiple units called bronchopulmonary segments with each segment receiving its own air from bronchus and is supplied by blood from its own artery.
        
        At the end of each bronchial tubes lies the lung's alveoli; tiny air sacs that absorb all oxygen breathed in, and shrink when exhalation occurs.
        
        Found inside the alveolar walls are Type I and Type II cells. Type I cells are squamous, flat cells that form the structure of the alveoli. Type II cells release pulmonary surfactant, which reduces surface tension.
  - - - Henry's Law states that when a gas comes into contact with the surface of a liquid, the amount of gas will move into the solution proportional to the partial pressure of the gas.
        
        Graham's Law states that when gases are dissolved in liquids, the relative rate of diffusion of any gas is proportional to its solubility in the liquid.
        
        Fick's Law states that the net diffusion rate of a gas across a fluid membrane is proportional to its difference in partial pressure.
  - - - When the body does not receive enough oxygen, especially at higher altitudes where the saturation of oxygen in the air is lower, you are forced to breath harder and more frequently to make up for the difference. Because there is less oxygen in the air at higher altitudes, the exchange between the alveoli and pulmonary capillaries is not as effective, which results in a lessened diffusion gradient which reduces the overall partial pressure of oxygen within the blood.
  - - - Trauma, certain allergens/hypersensitivities and various infections can cause the respiratory system to become inflamed. During inflammation, many different types of cells respond to the inflammation to help combat it. Because the lung is constantly exposed to harmful pathogens from our breathing, inflammation is the first line of defense to remove the invaders as quickly as possible.
        
        Acute inflammation can be seen in cases such as pneumonia or ARDS, while chronic inflammation can be things such as asthma. Because the lungs are where gas exchange occurs, long term inflammation can become a life threatening condition if not treated.