Body

muscle

Where it runs

From the side of the upper neck to the top inner corner of the shoulder blade.

What it does

Lifts the shoulder blade and tilts the neck to the side.

Drills that work it

No drill here lists it among what it works. It is on the model to show what sits around the drills' structures. See all the drills →

General anatomy, simplified. It describes a structure, not anybody's shoulder, and cannot say what is wrong with yours.