| http://www.w3.org/ns/prov#value | - Drugs, anaesthetics and emotional stress induce vasodilation or vasoconstriction of the microvessels, which is favorable in some cases and unfavorable and often harmful in others, e.g. overloading the heart by decreasing the peripheral resistance in case of massive vasodilation and causing insufficiency of blood supply to tissues in cases of prolonged vasoconstriction.
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