<prompt> Abductors of vocal cord isLateral cricoarytenoidsPosterior cricoarytenoidsThyro arytenoidsCricothyroids  <response>: i.e. Posterior cricoarytenoids: 243-BDC-3-5th edMuscles acting on the Larynx Movements Muscles1. Elevation of larynx Thyrohyoid, mylohyoid2. Depression of larynx Sternothyroid, sternohyoid3. Opening of larynx Thyroepiglotticus4. Closing inlet of larynx Aryepiglotticus5. Abductor of vocal cords Posterior cricoaryteroids only6. Adductor of vocal cords Lateral cricoarytenoids, transverse oblique arytenoids7. Tensor of vocal cords Cricothyroids8. Relaxor of vocal cords Thyroarytenoidsi Cricothyroid is supplied by external laryngeal nerveii Rest of the intrinsic muscle - recurrent laryngeal nerve 