<prompt> Roof of the Anatomical snuff box is formed by theRadial aeryBasilic aerySup branch of radial nerveSup branch of ulnar nerve  <response>: Anatomical snuff box boundaries: Lateral wall Abductor pollicis longus Extensor pollicis brevis Medial wall Extensor pollicis longus Roof Cephalic vein Sup branch of radial nerve Floor Radial styloid, scaphoid, trapezium,1st meta carpal Content Radial Aery Ref: Grays Anatomy The Anatomical Basics of Clinical Practice 41 e pg 893. 