What does sympathetic nervous system stimulation to the smooth muscle lay- ers in the bronchioles cause? A. bronchoconstriction B. bronchodilation C. an increase in tidal volume D. increase in activity of the cilia
Option B. Bronchodilation is inspired via way of means of sympathetic nerve impulses, adrenalin & noradrenalin. Bronchoconstriction induced through parasympathetic nerve impulses.
