Identify the role that the autonomic nervous system plays in the development of asthma.
A. Parasympathetic stimulation by epinephrine (beta-2 receptor) produces the bronchodilation that is characteristic of asthma.
B. Sympathetic activation through the release of epinephrine produces bronchoconstriction and increased secretion of mucus.
C. Sympathetic activation through the release of acetylcholine produces bronchoconstriction and increased secretion of mucus.
D. Parasympathetic activation through the release of acetylcholine produces bronchoconstriction and increased secretion of mucus.
Answer: D
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