Abductor of vocal cord:
INTRINSIC MUSCLES OF RESPIRATION: (a) Acting on vocal cords * Abductors: Posterior cricoarytenoid * Adductors: Lateral cricoarytenoid Interarytenoid (transverse arytenoid) Thyroarytenoid (external pa) * Tensors: Cricothyroid (Main tensor) Vocalis (internal pa of thyroarytenoid) (b) Acting on laryngeal inlet * Openers of laryngeal inlet: Thyroepiglottic (pa of thyroarytenoid) * Closers of laryngeal inlet: Interarytenoid (oblique pa). Aryepiglottic (posterior oblique pa of interarytenoids)
Cricothyroid
Cricoarytenoid
Posterior cricoarytenoid
Lateral cricoarytenoid
JIPMER 2017