A 65-year-old female with a smoking history of 2 packs/day for 30 years has been diagnosed with chronic obstructive lung disease. She most likely has increased mucus viscosity due to:

A. bronchoconstriction
B. stimulation of parasympathetic fibers in bronchial glands
C. stimulation of the sympathetic nerves
D. abnormal breathing pattern
E. stimulation of smooth muscles


ANS: B

Anatomy & Physiology

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Anatomy & Physiology