MD 80īs elevators
The elevator control system on the MD80īs is a pair of elevators attached to the horizontal stabilizer. The elevator control is, for normal flying, an aerodynamic boost system that operates a single control tab on each elevator. Each tab is driven by its corresponding control column, both of them attached by a torque tube.
This is a short resume of the MD-80 Flight Crew Operating Manual.
I hope I was clear enough.