<prompt> Roof of Anatomical snuff box is related toRadial aeryBasilic veinSuperior Branch of radial nerveSuperior branch of ulnar nerve  <response>: The name snuff box originates from the use of this surface for placing and then sniffing powdered tobacco, or snuff Anatomical Snuffbox boundaries Lateral wall Abductor pollicis longus APL Extensor pollicis brevis EPB Medial Wall Extensor pollicis longus EPL Roof Cephalic vein Superior branch of radial nerve Floor Radial styloid, scaphoid, Trapezium and 1st Metacarpal Only content: Radial aery. Ref: Grays Anatomy 41st edition Pgno: 893 