Sympathetic vs. parasympathetic effects
Which response results from sympathetic nervous system stimulation?
Answer C: explanation for every choice
A
Increased gut motility is a parasympathetic effect.
B
Pupil constriction is parasympathetic. Sympathetic activity dilates the pupils.
C
Correct. Sympathetic activation opens the airways to increase airflow.
D
Slowing the heart is parasympathetic, via the vagus nerve.
TakeawaySympathetic: fight or flight. Parasympathetic: rest and digest.
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Reviewed 2026-11-05 by a medical student. Spot an error? Report it with question ID bb88.