How are asthma and chronic obstructive pulmonary disease (COPD) different?
a. COPD is a genetic disease whereas asthma is largely caused by allergies.
b. Breathing problems with asthma are reversible but those with COPD are perma-nent.
c. Asthma is a disease of children and younger adults whereas COPD is found only in older adults.
d. Breathing problems with COPD can lead to death, whereas those with asthma are not severe enough to be fatal.
B
Asthma is a problem of airway obstruction caused by constriction of the bronchial smooth mus-cles that surround the airways and by inflammation in the airways. It occurs in episodes or at-tacks. Between attacks, the airways are open. Thus the problem is intermittent and reversible. COPD, however, has permanent airway changes and is not cured by therapy. Both disorders can cause such severe airway obstruction that death occurs.
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