MCAT Question A Day - 8/19/14

In an asthma attack, a patient suffers from difficulty breathing due to constricted air passages. The major causative agent is a mixture of leukotrienes called slow reacting substance of anaphylaxis. During an asthma attack, slow reacting substance of anaphylaxis most likely causes:

A. smooth muscle spasms of the bronchioles.

B. cartilaginous constriction of the trachea.

C. edema in the alveoli.

D. skeletal muscle spasms in the thorax.

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