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.
Cervical spondylosis is usually an age-related condition that affects the joints in your neck. It develops as a result of the wear and tear of the cartilage and bones are of the cervical spine.ging. Cervical spondylosis often develops as a result of changes in your neck joints as you age. Your spinal disks can become dry and begin shrinking around the time you turn 40, reducing the cushioning between the bones in your neck. Your disks might also develop cracks as you get older.