DNAP 735 Airway APEX Study guide

The ____ laryngeal muscles control the tension and position of the vocal cords, while the _____ laryngeal muscles support the larynx inside the neck and assist with swallowing - intrinsic, extrinsic The ____ nerve innervates all of the intrinsic laryngeal muscles except the cricothyroid muscle - recurrent laryngeal Which laryngeal muscle pair is responsible for opening (abducting) the vocal cords? - the posterior cricoarytenoids Which laryngeal muscle pair is responsible for closing (adducting) the vocal cords? - the lateral cricoarytenoids Which muscle tenses the vocal cords? - cricothyroid Which muscle relaxes the vocal cords? - thyroarytenoid Which cranial nerve provides sensory innervation to the face and head? - the trigeminal nerve (CN 5) What are the 3 branches of the trigeminal nerve? - 1. Ophthalmic 2. Maxillary 3. Mandibular Which nerve provides sensation from the oropharynx to the anterior side of the epiglottis? - the glossopharyngeal nerve (CN 9) Which cranial nerve gives rise to the superior laryngeal nerve? which branch of the SLN has sensory function, which has motor? - the vagus nerve (CN 10), the internal branch has sensory function (posterior side of the epiglottis to the level of the vocal cords), the external branch has motor function (allows cricothyroid muscle to tense vocal cords)