NasalsepumPhapngealopeningalouditony(eustachiun)NasopharynstubeSoftpotateUrulaPalotineOrophaynxtonsilRootoftongueEpiglottisHypophosynxEsophagusTmagemadeavalableby a generous grantfromBristol-Myers Squibb
NasopharynxParanasalSinusesNasalEuctachiantubeCavityOralNasopharynxCavityrephanyna-PharyrxtypopharyrxSalivaryGlandsLanynxTracheaEsophegus?
Nasopharynx
Fivewalls of nasopharynxRoof of nasopharynx is formed bybasisphenoidandbasiocciputPosteriorwallisformedbyarchoftheatlasvertebra coveredby prevertebralmusclesandfasciaFloorisformed bysoftpalate anteriorlybut is deficient posteriorly.it is a space-thenasopharyngealisthmus
Five walls of nasopharynx Roof of nasopharynx is formed by basisphenoid and basiocciput Posterior wall is formed by arch of the atlas vertebra covered by prevertebral muscles and fascia Floor is formed by soft palate anteriorly but is deficient posteriorly. it is a spacethe nasopharyngeal isthmus
Anteriorwall isformed byposteriornasalaperturesorchoanae,separatedfromeach otherbytheposteriorborderofthenasalseptumLateralwall.Eachlateralwallpresentsthepharyngeal opening of eustachiantubesituated1.25cmbehindtheposteriorend of inferiorturbiante.AboveandbehindthetubeisarecesscalledfossaofRosenmuller
Anterior wall is formed by posterior nasal apertures or choanae, separated from each other by the posterior border of the nasal septum Lateral wall. Each lateral wall presents the pharyngeal opening of eustachian tube situated 1.25 cm behind the posterior end of inferior turbiante. Above and behind the tube is a recess called fossa of Rosenmuller
Nasopharyngeal tonsil(adenoids):alymphoid tissue at the junction of roofand posteriorwall of nasopharynx. Itincreases in size up to the age of sixyearsandthengraduallyatrophies
Nasopharyngeal tonsil( adenoids): a lymphoid tissue at the junction of roof and posterior wall of nasopharynx. It increases in size up to the age of six years and then gradually atrophies