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MBBS QUESTION #10180
Question 1
A laceration at the wrist, medial to the palmaris longus tendon, transects a nerve leading to loss of sensation over the palmar aspect of the little finger and weakness of finger abduction/adduction. Which nerve is injured?
  • Median nerve
  • Ulnar nerve✔️
  • Radial nerve
  • Musculocutaneous nerve
Correct Answer Explanation
The ulnar nerve runs superficially at the wrist lateral to flexor carpi ulnaris, supplying most intrinsic hand muscles (interossei, hypothenar muscles, adductor pollicis) responsible for finger abduction/adduction, plus sensation to the little finger and adjacent half of the ring finger.