How can the sympathetic division cause smooth muscle to relax in some organs and contract in others?

This is a BYG question in Saladin (A&P)

 

Because it has dual innervation.

Step-by-step explanation

Sympathetic nervous system, division of the nervous system that functions to produce localized adjustments and reflex adjustments of the cardiovascular system.

Sympathetic nerves originate inside the vertebral column.

There are three major molecules secreted within the sympathetic nervous system namely; acetylcholine, epinephrine, and norepinephrine.