Schnugg - I didn't know that wings "Articulated." You must have received a pretty big score on your SATs!
Capt Morgan, to answer your question, there are two levers. One is a small "wingfold" lever that switches hydraulic valves. Once the wings are spread, the "wing lock" lever folds over the wingfold lever and pushes (hydraulically) four big cylinders into slots in the wings to hold them in place. Bunk is correct about the placement. In the first cockpit pic, it is just to the right of the park/emer brake. In the second pic, you can see the wingfold lever hiding behind the wing lock lever.
If you look at the way the wings spread, they come forward and then up, so if they come unlocked in flight they will still be held in place aerodynamically.
Nose