<prompt> Superficial incision on posterior triangle of neck leads the -Difficulty in shrugging of shoulderDifficulty in start of abductionDifficulty in rotation of face towards the same sideDifficulty in flexion  <response>: Damage to spinal accessory nerve causes drooping of the shoulder, difficulty in overhead abduction and difficulty in shrugging of the shoulder due to paralysis of the trapezius. 