A 58-year-old female, known case of multinodular goiter underwent sub-total thyroidectomy. After 8 days, patient again presented to the OPD with hoarseness of voice. The nerve which was damaged during the surgery supplies all the muscles marked except: -
High-Yield Explanation
THIS IS A CLASSICAL CASE OF RECURRENT LARYNGEAL NERVE (RLN) PALSY POST THYROIDECTOMY. RLN SUPPLIES ALL THE MUSCLES OF LARYNX EXCEPT CRICOTHYROID WHICH IS SUPPLIED BY EXTERNAL LARYNGEAL NERVE.