<prompt> All are true about the Sympathetic vasodilator system exceptIt originates from the frontal coexIt has a strong basal toneThe fibres to skeletal muscles are cholinergicAfter sympathectomy, the blood vessels dilate  <response>: There is no tonic activity in the vasodilator fiberssympathetic, but the vasoconstrictor fibers to most vascular beds have some tonic activity Sympathetic noradrenergic fibers end on blood vessels in all pas of the body to mediate vasoconstriction- So sympathectomy cause vasodilation Resistance vessels in skeletal muscles are innervated by vasodilator fibers, which, although they travel with the sympathetic nerves, are cholinergic sympathetic cholinergic vasodilator system Ref: Ganongs Review of Medical Physiology Twenty-Third Edition Page No:556 