《耳鼻喉科学 Otolaryngology》课程教学课件（PPT讲稿）pharynx and larynx_larynx

传承百年仁爱精通济世医术larynx

larynx

精通济世医术传承百年仁爱Anatomy of larynx

Anatomy of larynx

Anatomy of larynx传承百年仁爱精通济世医术Thelarynx lies infrontof thehypopharynx opposite thethirdto sixth cervical vertebrae.It moves vertically and inanteroposterior direction duringswallowing and phonationItcanalsobepassively movedhypopharynxfrom side to side producing acharacteristic grating sensationcalled laryngeal crepitus.In an adult, the larynx ends atSthe lower border of C6 vertebra

The larynx lies in front of the hypopharynx opposite the third to sixth cervical vertebrae. It moves vertically and in anteroposterior direction during swallowing and phonation. In an adult, the larynx ends at the lower border of C6 vertebra. It can also be passively moved from side to side producing a characteristic grating sensation called laryngeal crepitus. hypopharynx Anatomy of larynx

Anatomy of larynx传承百年仁爱精通济世医术Larngeal cartilagesLarynx has 3 unpaired and 3 paired cartilage.3unpaired cartilageEepiglottisThyroid:it is the largest of allCricoid:Thyroidit is the only cartilage forminga complete ringCricoidEpiglottis:it is a leaf-like, yellow, elastic cartilageforming anterior wall of laryngeal inlet

3 unpaired cartilage: Larngeal cartilages Larynx has 3 unpaired and 3 paired cartilage. Eepiglottis Thyroid Cricoid Anatomy of larynx Thyroid: it is the largest of all. Cricoid: it is the only cartilage forming a complete ring. Epiglottis: it is a leaf-like, yellow, elastic cartilage forming anterior wall of laryngeal inlet

Anatomy of larynx传承百年仁爱精通济世医术Larngeal cartilagesLarynx has 3 unpaired and 3 paired cartilageHyoepiglottic3 paired cartilage:ligamentHyoid boneFat in pre-epiglotArytenoid cartilagespaceThyrohyoidmembSrriculateCorniculateCorniculate cartilageThyroid cartilageLnoeQuadrangularArytenoidArytenoidmembranecarilageCnicovocalCuneiformcartilagemembrane

3 paired cartilage: Arytenoid cartilage Corniculate cartilage Cuneiform cartilage Larngeal cartilages Larynx has 3 unpaired and 3 paired cartilage. Arytenoid Corniculate Anatomy of larynx

Anatomy of larynx传承百年仁爱精通济世医术Laryngeal jointsCricoarytenoid jointCricothyroid joint

Laryngeal joints Cricoarytenoid joint Anatomy of larynx Cricothyroid joint

Anatomy of larynx传承百年仁爱精通济世医术Muscles of larynxThey are of two types:intrinsic, which attach laryngeal cartilages toeach other.extrinsic, which attach larynx to the surroundingstructures

Muscles of larynx They are of two types: Anatomy of larynx intrinsic, which attach laryngeal cartilages to each other. extrinsic, which attach larynx to the surrounding structures

Anatomy of larynx传承百年仁爱精通济世医术Muscles of larynxsecausetne1.Intrinsic muscles:Pre-epigloThey may act onspace(a)Acting on vocal cordsIntrinsicFaraglotticimusclesspace(b)Acting on laryngeal inletVocalligament

1.Intrinsic muscles: Muscles of larynx Intrinsic muscles Anatomy of larynx They may act on (a)Acting on vocal cords (b)Acting on laryngeal inlet

Anatomyoflarynx传承百年仁爱精通济世医术Muscles of larynx2.Extrinsic muscles:They connect the larynx to theneighbouring structures andare divided into elevators orExtrinsicdepressorsoflarynx.musclesElevatorsDepressors

2.Extrinsic muscles: Muscles of larynx Extrinsic muscles Anatomy of larynx Elevators Depressors They connect the larynx to the neighbouring structures and are divided into elevators or depressors of larynx

Anatomy of larynx传承百年仁爱精通济世医术Cavity of the larynxLaryngeal cavity startslaryngealinletat the laryngeal inletand endsat the lower border ofcricoid cartilagecricoid cartilage

Laryngeal cavity starts at the laryngeal inlet Cavity of the larynx laryngeal inlet cricoid cartilage Anatomy of larynx and ends at the lower border of cricoid cartilage