Asthma is an obstructive disease characterized by inflamed airways that lead to decreased diameter of the airways. Based on your knowledge of airway resistance and mechanics of breathing, explain the effect of asthma on inspiration and expiration. Which of these, expiration or inspiration, will be more greatly affected by this disease?
What will be an ideal response?
Ans: Patient usually complains of dyspnea, cough , chest tightness and wheezing that vary overtime and in intensity, together with variable expiratory airflow limitation. It results from narrowing of the airways produced by a combination of muscle spasm , mucosal edema and viscid bronchial secretions.
During an asthma attack greater pressure is needed to push air through bronchus. This results in Increased use of accessory muscles to breath
EXPIRATION will be more greatly affected by this disease.
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What will be an ideal response?
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a. It is also called vasopressin. b. It is not secreted if the body consumes large amounts of water. c. It is produced by the distal convoluted tubule. d. It is secreted if the body fluids become hypertonic. e. It stimulates reabsorption of water.
When the diaphragm contracts, lung volume ________.
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When bicarbonate levels fall due to an accumulation of fixed acids in the body, the result is
A. metabolic acidosis. B. metabolic alkalosis. C. insufficient respiration. D. respiratory acidosis. E. respiratory alkalosis.