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.
Exam: Normal course of Cervical Length. 1  Wide variation in Cervical Lengths at 22-30 weeks Length of 2.0 cm: 5th percentile. Length of 2.5 cm: 10th percentile. 2  Cervical Lengths shorten with Gestational age Gestational age 16-20 weeks: 4.0 - 4.5 cm. Gestational age 24-28 weeks: 3.5 - 4.0 cm.