If median nerve is injured at the wrist, then loss of function of all of the following muscles will take place, EXCEPT:
Median nerve (C6-T1):Provides most of the innervation to the anterior forearm, excluding one and one half muscles, the flexor carpi ulnaris and the ulnar half of the flexor digitorum profundus muscle, which are innervated by the ulnar nerve. The median nerve continues into the hand to innervate the thenar eminence and lumbricals 1 and 2. It provides cutaneous innervation to the medial palmar side of the hand and the palmar surface of digits 1 through 3 and half of digit 4. Ref: Moon D.A., Foreman K.B., Albeine K.H. (2011). Chapter 29. Overview of the Upper Limb. In D.A. Moon, K.B. Foreman, K.H. Albeine (Eds), The Big Picture: Gross Anatomy.
Lumbrical muscles to the Index finger
Lumbrical muscles to the middle finger
Muscles of the thenar eminence
Abductor pollicis