Transcontinental railroads in and near the United States (1887). A transcontinental railroad is a contiguous network of railroad trackage that crosses a continental land mass with terminals at different oceans or continental borders.
Normal cervical range of motion is. 1  Flexion â 80 to 90 degrees. 2  Extension â 70 degrees. 3  Lateral flexion â 20 to 45 degrees on both sides.  Rotation â 90Â° of rotation to both sides.
Two types of traction are used to stretch out the cervical spine: 1  Manual traction. A physical therapist performs this type of traction. 2  Mechanical traction. This form of traction for the cervical spine involves tension provided by mechanical means. A machine may provide the tension, or it can be a system of weights used with a harness or sling. Straps are placed on the patient's head, and then mechanical pressure is used to pull the head away from the neck and spine.