Abstract
Using the cannula inserting method, effects of cooling (from 37°C to 27°C) on norepinephrine (NE)- and KCI-induced vasoconstrictions were investigated in isolated, perfused simian and canine femoral arteries and veins. KCI-induced constrictions were much greater in simian vessels than in canine vessels. NE-induced constrictions were similar in both arteries, but were greater in simian veins than in canine veins. In both arteries, NE- and KCI-induced vasoconstrictions were markedly depressed to almost the same degree by cooling. In both veins, the vasoconstrictions were not significantly affected by cooling.
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