THE PHARYNX1nasopharynx口oropharynx舌族laryngopharynxBEREAwww.ent-hn..com
THE PHARYNX nasopharynx oropharynx laryngopharynx
ThepharynxistheAppliedcommonpassageofthe respiratorytractand the digestive tract.anatomyItextendsfromthebase oftheskullThe pharynx as ato the inlet of thecommon pathwayfor food and air.esophagusatthelevelofthesixthcervical vertebra.It'sabout12~14cmlong
Applied anatomy The pharynx is the common passage of the respiratory tract and the digestive tract. It extends from the base of the skull to the inlet of the esophagus at the level of the sixth cervical vertebra. It’s about 1214cm long. oropharynx laryngopharynx
Structure of pharyngeal wallFromwithoutwardsitconsistsoffourlayers1.Mucousmembrane2. Pharyngeal aponeurosis3.Muscular coat4.Buccopharyngealfascia
Structure of pharyngeal wall From with outwards it consists of four layers 1.Mucous membrane 2. Pharyngeal aponeurosis 3. Muscular coat 4. Buccopharyngeal fascia
1.MucousmembraneIt linesthepharyngeal cavityandiscontinuouswith mucous membraneofeustachiantube,nasal cavity,mouthlarynxandoesophagus.The epithelium is ciliated columnar innasopharynxand stratifiedsquamouselsewhere
1. Mucous membrane It lines the pharyngeal cavity and is continuous with mucous membrane of eustachian tube, nasal cavity, mouth, larynx and oesophagus. The epithelium is ciliated columnar in nasopharynx and stratified squamous elsewhere
2.Pharyngeal aponeurosisItisafibrouslayerwhichlinesthemuscularcoatand is particularlythicknearthe base of skull but is thinandindistinctinferiorly
2.Pharyngeal aponeurosis It is a fibrous layer which lines the muscular coat and is particularly thick near the base of skull but is thin and indistinct inferiorly