system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
The changes in voice produced as a result of External laryngeal nerve injury post thyroidectomy are all except
assistant
The correct answer is  The superior laryngeal nerve has two branches: an internal branch that supplies sensory fibers to the larynx and an external branch that supplies motor fibers to the cricothyroid muscles and tenses the vocal cords. The external branch can run closely adherent to the superior thyroid aery, and care must be exercised during dissection in this area. Injury to the external branch causes voice changes, huskiness, Poor volume and projection , voice fatigue, and inability to sing at higher ranges