耳鼻咽喉科学英文版ppt课件 laryngology.ppt

Laryngology,Review,AnatomyPhysiologic functions:Respiration;Pronunciation;Protection;SwallowingCharacteristics of the childrenSymptoms:1）hoarseness 2）inspiratory dyspnea 3）laryngeal stridor 4）pain of the larynx 5）hemoptysis,Laryngeal musclesExtrinsic laryngeal muscles Up：geniohyoideus;digastricus;mylohyoideus Down：sternothyreoideus;sternohyoideus;omohyoideusIntrinsic laryngeal muscles:abductor：posterior cricoarytenoid musle adductor：lateral cricoarytenoid musle,arytenoid musle tensor：cricothyroid musle relaxer：thyroarytenoid musleMain components of the vocal cords：thyroarytenoid musle,vocal ligament,mucosa,The lymphatic drainage of the larynx Supraglottic region：rich lymphatic vessels aryepiglottic folds anterior of sinus piriformisthyrohyoid membranecarotid bifuracation Infraglottic region：less lymphatic vessels across the cricothyroid membraneprelaryngeal,para-tracheal inferior deep cervical lymph nodes Glottic portion：rare lymphatic vessels,Laryngeal nerve internus sensory nerve superior externus motor nerve(cricothyroid musle)vagus left longer recurrent right motor nerve(all the intrinsic laryngeal muscles except cricothyroid musle),normal,