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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.
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Which of the following muscle is known as safety muscle of larynx?
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The correct answer is  Posterior cricoarytenoid is known as safety muscle of larynx. It is so called because being the only abductor of the vocal cords it keeps the rima glottis open to allow air to enter the lungs. Adductors of vocal cord are: Cricothyroid Thyroarytenoids Lateral cricoarytenoid Transverse arytenoids Relaxant of vocal cords: Vocalis Thyroarytenoid