Assertion: parasympathetic nervous system's function | /r/Causes | vascular dilation
Facets:
value: under some conditions
type: OTHER
Source sentences:
text: Under some conditions, the beta function of the sym-pathetics causes vascular dilation instead of the usual sympathetic vascular constriction, but this occurs rarely except after drugs have paralyzed the sympathetic alpha vasoconstrictor effects, which, in blood vessels, are usually far dominant over the beta effects.