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.
Located in the heart of Chicago. As the tallest building in America, Willis Tower is widely recognized as a civic icon and the signature building in Chicagoâs skyline. With a prestigious address along famed Wacker Drive, Willis Tower is located in the heart of the Loop, Chicagoâs business district. The buildingâs central location in downtown provides for easy access to public transportation systems.