title: NORMAL MOTIONS IN THE UPPER PORTION OF THE CERVICAL SPINE.
mesh_terms: D001269:Atlanto-Occipital Joint; D001368:Axis, Cervical Vertebra; D001270:Cervical Atlas; D002574:Cervical Vertebrae; D006801:Humans; D009068:Movement; D010827:Physiology
keywords: ATLANTO-OCCIPITAL JOINT; ATLAS; AXIS; MOVEMENT; PHYSIOLOGY