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 Lordosis Facts. The neck is usually curved in a lordotic fashion, meaning the open end of the curve faces the rear of the body. This cervical curve, just like all the other usual spinal curves, is designed to absorb shock and carry weight.