Which of the following laryngeal muscles constitute tensors of vocal cord?
Posterior cricothyroid, internal interarytenoid
Lateral cricothyroid, internal interarytenoid
Thyroarytenoid, internal interarytenoid
Cricothyroid and internal thyroarytenoid
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)