Amphetamine-related psychiatric disorders can be confused with psychiatric disorders caused by organic, medical, neurologic, and/or psychological etiologies. The causes of amphetamine-related psychiatric disorders usually can be determined by assessing the patient's history and the family's genealogy.
Weight is shifted onto the rear leg. Right arm begins to extend back and the lead leg extends in the opposite direction. Weight is planted on the lead leg. The hips begin to open as the trailing arm externally rotates, and the wrist is set by force of the change of direction.
Rocker arm. Rocker arm. A rocker arm (in the context of an internal combustion engine of automotive, marine, motorcycle and reciprocating aviation types) is an oscillating lever that conveys radial movement from the cam lobe into linear movement at the poppet valve to open it.