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- A partial pressure gradient of oxygen exists between ________. a. air and lungs b. lungs and metabolically active tissues c. air at sea level and air at high altitudes d. all of the aboveWhat characteristics in a gas exchange surface, such as the endothelial cells lining the inside of lung, would relate to its effectiveness? Select all correct choices. a large surface to volume ratio a small surface to volume ratio a thick layer of cells (many cell layers) a thin layer of cells (1-2 cell layers)The diffusion coefficient of a gas is a constant and is not affected by disease states or treatment options. In contrast the other factors that determine gas diffusion through the respiratory membrane is affected by changes.Name the factors that can cause an increase in the diffusion rate through the respiratory membrane and provide detailed examples of conditions that will cause this increase.
- Discuss those factors that infl uence the rate of diffusion across the blood-gas interface in the lung.In layman's term, explain the proper administration of a metered dose inhalation aerosol containing a micronized medicated powder with inert ingredients.A patient is hyperventilating (breathing very quickly). Consider the consequences of this action on the carbon dioxide level in the blood. What can occur? respiratory alkalosis metabolic acidosis metabolic alkalosis respiratory acidosis
- Asthma is a very common disease. It is characterized by widespread narrowing of the bronchioles and formation of mucus plugs, producing symptoms of wheezing, shortness of breath, and coughing, and is caused by the release of factors during an allergic response. Explain why the narrowing of bronchioles, rather than that of the larger bronchi, is the source of the airflow restriction, and why inhaling dilating agents can bring relief during an asthma attack.which of the following are true of surfactant? pick two answers: increases surface tension, found in the alveoli, increases pulmonary compliance, necessary for gas exchange.List examples of the dangerous gaseous andparticulate components of chemical inhalants.
- A patient has severe uncompensated respiratory acidosis. Temperature is normal and hemoglobin concentration is within the reference range. Which of the following oxygen dissociation curves best describes the relationship between oxygen content and PO2 (the solid curve is normal) in this patient?Particulate contamination of the alveoli can result in serious respiratory disease. What three structural and cellular mechanisms are there for reducing the chances of such contamination?You cannot affect the oxygen delivery to your tissues by drinking “oxygenated water.” However, breathing oxygen at hyperbaric pressures does increase oxygen delivery to the tissues. Explain whythese two statements are true.
