Rocker Arm Shaft/Rocker Arm/Lash Adjuster: Operation
WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
The rocker arm is the pivot point between the camshaft lobe and the valve.