Which of the following laryngeal muscles constitute tensors of vocal cord?
Cricothyroid and internal pa of thyroarytenoid (vocalis) together constitute tensors of vocal cord. Intrinsic muscles acting on vocal cords: * Abductors: Posterior cricoarytenoid * Adductors: Lateral cricoarytenoid, Interarytenoid (transverse arytenoid), Thyroarytenoid (external pa) * Tensors: Cricothyroid, Vocalis (internal pa of thyroarytenoid) Intrinsic muscles 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)
Posterior cricothyroid, internal interarytenoid
Lateral cricothyroid, internal interarytenoid
Thyroarytenoid, internal interarytenoid
Cricothyroid and internal thyroarytenoid