Rotation is the movement which we use to look over our shoulder or look back. The movement is equal on either side. Normal range of motion of cervical spine is. 1  Flexion â 80 to 90 degrees. 2  Extension â 70 degrees.3  Lateral flexion â 20 to 45 degrees on both sides. 4  Rotation â 90Â° of rotation to both sides.otation is the movement which we use to look over our shoulder or look back. The movement is equal on either side. Normal range of motion of cervical spine is. 1  Flexion â 80 to 90 degrees. 2  Extension â 70 degrees.
Black Rat Snake Information & Facts. Black Rat Snake Biology: In general, black rat snakes are a medium-sized snake. Their average length is between 40 to 70 inches. The widest point of the snakeâs body is usually near the tail section and the snake has an average diameter of around two inches. This length and width makes black rat snakes have a powerful and sleek body that is able to move fluidly horizontally on the ground, as well as vertically in trees.
This is a very common snake in our area. The black rat snake starts life as a gray and brown snake, seen in the pictures at the bottom of this page. As the snake matures the back turns almost all black, although some remnants of the young snake's pattern can still be seen even in a large adult. These. snakes can grow over 6 feet long.