Cutaneous vasocontriction is mediated by: (A) Sympathetic adrenergic nerves, (B) Sympathetic cholinergic nerves, (C) Parasympathetic cholinergics, (D) Somatic nerves
Answer is A. Noradrenaline acts on vascular smooth muscles to cause vasoconstriction. This is mediated by adrenergic sympathetic fibers.