Safety muscle of larynx is:: (A) Aryepiglotticus, (B) Cricoarytenoid, (C) Thyroarytenoid, (D) Posterior cricoarytenoid
Answer is D. Ans. D Posterior cricoarytenoidRef: Dhingra, 5thpg. 300* Posterior cricoarytenoid is the most important muscle of the larynx as it is the only abductor of vocal cord.* Paralysis of posterior cricoarytenoid will lead to adduction of vocal cord, which may lead to dyspnea resulting in death.