Patient underwent surgery at the lateral pa of the skull. Postoperatively patient had aspirations without voice change

Explanation

Ans. D (Superior Laryngeal nerve)* Vagus, RLN involvement leads to hoarseness of the voice* SLN divide into internal and external laryngeal* External laryngeal nerve supplies only one muscle- cricothyroid - tensor* Internal laryngeal nerve- safety nerve of larynx- prevents aspiration and supplies supraglottic pa of larynx.