<prompt> Regarding the anatomical snuffbox, which of the following is true?Abductor pollicis longus forms the posterior wallAbductor pollicis longus and Extensor pollicis brevis form the anterior wallBasilica vein forms the roofFloor is formed by Extensor carpi radialis longus and brevis  <response>: Boundaries of anatomical snuff box :Anterior Lateral wall - Extensor pollicis brevis and abductor pollicis longus tendons. Posterior medial wall - Extensor pollicis longus tendon.Floor - Styloid process of radius, trapezium, scaphoid and base of first metacarpal.Roof - Skin, fascia, starting of cephalic vein, superficial branch of radial nerve.Content - radial artery. 