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.
The pectoralis muscles -- major and minor -- attach your ribs to the front of your upper arm. These muscles lift your arm forward, bring it in toward your body and rotate your shoulder inward. The coracobrachialis is a deep muscle on the front of your upper arm that moves your arm forward.