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 spondylotic myelopathy (CSM) is a compression of the spinal cord in your neck. A compression means pressure, pinching, or squeezing. CSM often affects adults 50 years or older. It can affect men at an earlier age than women.