What muscles are involved in lateral raises?

Deltoids specifically---If you keep your palms parallel to the floor, medial deltoid. If you raise the front of your hand higher than the back (thumb facing up-very common) you transfer the tension to the anterior deltoid. trapezius also work into it. Biceps/triceps/forearms are used slightly as ancillary muscles-assumming you are using freeweights.. I am a former personal trainer. any ?'s bnielson_2@yahoo.com