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.
burj khalifa is the worldâs tallest building.there are 163 floors located above the ground of burj khalifa. itâs initial name was burj dubai.it is located in dubai,united arab emirates. Itâs building has a specially designed elevator system for controlled evacuation in times of emergency situations like security threats or fire.