PharynxEsophagusStomachDuodenumJejunumIleumLargeintestineLiverAlimentarySystemAnus第一页，共四十五页。PharynxPharynx•GeneralfeaturesGeneralfeatures–Afibromusculartube,partofdigestiveandrespiratorysystemsAfibromusculartube,partofdigestiveandrespiratorysystems–Extendsfrombaseofskulltotheinferiorborderofcricoidcartilage(lowerborderofCExtendsfrombaseofskulltotheinferiorborderofcricoidcartilage(lowerborderofC66levellevel))•ThreesegmentsThreesegments–NasopharynxNasopharynx–OropharynxOropharynx–LaryngopharynxLaryngopharynx第二页，共四十五页。PharynxNasopharynxNasopharynx•PositionPosition–PosteriortonasalcavitiesPosteriortonasalcavities–ExtendsfromthebaseofskulltotheleveloffreeborderofpalatinevelumExtendsfromthebaseofskulltotheleveloffreeborderofpalatinevelum•FeaturesFeatures–PharyngealopeningofauditorytubePharyngealopeningofauditorytube–TubaltorusTubaltorus–PharyngealrecessPharyngealrecess–TubaltonsilTubaltonsil–PharyngealtonsilPharyngealtonsil第三页，共四十五页。PharynxOropharynxOropharynx•PositionPosition–PosteriortooralcavityPosteriortooralcavity–ExtendsfromfreeborderofpalatinevelumtothelevelofupperborderofepiglottisExtendsfromfreeborderofpalatinevelumtothelevelofupperborderofepiglottis•FeaturesFeatures–MedianglossoepiglotticfoldMedianglossoepiglotticfold–EpiglotticvalleculaEpiglotticvallecula–PalatinetonsilPalatinetonsil•LieswithintonsillarfossaLieswithintonsillarfossa第四页，共四十五页。TTonsillitisonsillitisTonsilinflammationTonsilinflammation第五页，共四十五页。PharynxLaryngopharynx•Position–Posteriortolarynx–ExtendsfromupperborderofepiglottistotheleveloflowerborderofC6•Piriformrecess–Adeepdepressiononeachsideofapertureoflarynx–commonsideforlodgementofforeignbodies(forexample,fishbones)第六页，共四十五页。PharynxPharynxLymphaticringofpharynxLymphaticringofpharynx•FormingFormingacircularbandacircularbandofoflymphoidtissueatoropharyngeallymphoidtissueatoropharyngealisthmuisthmu•ConsistsofConsistsof–PharyngealtonsilPharyngealtonsil–...
