<prompt> Which of the following movement of thumb is lost in ulnar nerve injury ?OppositionExtensionAdductionAbduction  <response>: Ans. is c i.e., Adduction There is loss of adduction of thumb, as adductor pollicis is supplied by the ulnar nerve. Movements Muscles causing movements Flexion Flexor pollicis brevis median and ulnar Naccompanied by medial rotation Opponens pollicis median N assisted by flexor pollicis longus median N Extension Extensor pollicis longus radial N accompanied by lateral rotation Extensor pollicis brevis radial N Abductor pollicis longus radial N Abduction Abductor pollicis brevis median N Abductor pollicis longus radial N !Adduction Adductor pollicis ulnar N Opposition Opponens pollicis median N 