In most organs PSNS is dominant.When both systems are activated PSNS response isobserved eg. Nicotine and the GI tract: increased motility,secretionTissues with no PSNS input have a SNS response only. eg. SNS response in --- ---. Specifically, α1 causes vasoconstriction in organs and skin while β2 created vasodilation in skeletal muscle. NOTE a vascular bed with --- > vascular bed with --- and therefore the net effect will be ---heart: --- --- ---