Medical Definition of dorsiflexion. : flexion in a dorsal direction; especially : flexion of the foot in an upward directionâcompare plantar flexion.
Willis Tower. The Willis Tower, built as and still commonly referred to as Sears Tower, is a 108-story, 1,450-foot (442.1 m) skyscraper in Chicago, Illinois, United States.
Chicago Skyscraper Map. The map is centered on the tallest building marked for the city, Willis Tower. Zoom-in to the map (double-click) and pan-around (click + drag) to see all buildings. Click on a building's marker to open the information page for that building.