When a client with a history of asthma takes a walk outside on a windy day with high pollen counts, she may experience an asthma attack, resulting in an increase in respiration rate and wheezing
The body's response is likely related to which pathophysiological principle?
A) Parasympathetic nervous system stimulation resulting in airway constriction
B) Release of catecholamines causing blood vessel constriction
C) Influx of macrophages to wall of the pollen, thereby stopping the attack
D) Inhibition of glandular secretions, which causes build up of mucus in the lungs
Ans: A
Feedback:
The parasympathetic (PS) fibers are excitatory neurons that respond to acetylcholine. Stimulation of the PSN is responsible for airway constriction, blood vessel dilation, and increased glandular secretion. The sympathetic nervous system (SNS), which responds to the catecholamines norepinephrine and epinephrine, produces airway dilation, blood vessel constriction, and inhibition of glandular secretions.
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