In vaso-motor paresis, and still more paralysis, the Arterioles supplying the capillaries are widely dilated, and at the lowest blood pressure probably send more blood into the latter than in the normal state.
"On Snake-Poison: its Action and its Antidote"
A. Mueller
Your Arterioles have contracted.
"Round the Red Lamp Being Facts and Fancies of Medical Life"
Arthur Conan Doyle
In the one case there is a spasm of the Arterioles causing what the French call "dead fingers," and in the other paralysis of the vasomotor system with venous congestion in the parts.
"Psychotherapy"
James J. Walsh