1、Anatomy of PharynxCircumscription of pharynx Pharynx is the junction between respiratory tract and alimentary tract.Circumscription of pharynx Superior: base of skull Inferior: inferior border of C6 Anterior: Connect to nose, mouth and larynx Posterior: Prevertebral fasciaSubsection of pharynx nasop
2、harynx： skull base free edge of soft palate oropharynx： free edge of soft palate superior border of epiglottis laryngopharynx： superior border of epiglottisinferior border of cricoid cartilageNasopharynx(Epipharynx) adenoid pharyngeal opening of auditory tube torus tubalis pharyngeal recess tubal to
3、nsilsOropharynx(Mesopharynx) fauces glossopalatine arch pharyngopalatine arch tonsilla palatina lateral pharyngeal bands pharyngeal posterior wallLaryngopharynx （Hypopharynx） atrium of larynx vallecula epiglottica pyriform sinus postcricoid spaceStructure of pharyngeal wallllayer of pharyngeal wall
4、lmucous layerlfibrous layer lmuscle layer： pharyngeal constrictor pharyngeal elevator muscle group palatine velum muscle grouplMantle layerinterfascial space retropharyngeal space parapharyngeal space Pharyngeal lymph tissue Pharyngeal lymphatic ring(waldeyer lymphatic ring) inner ring outer ring Wa
5、ldeyer lymphatic ringStructure of pharyngeal lymphatic ringPharyngeal submucous lymph tissue(inner ring)Lymph node of neck（outer ring）adenoid tonsiltubal tonsilstonsilla palatinalateral pharyngeal bandsfolliculus lymphaticus of pharyngeal posterior walllingual tonsilretropharyngeal lymph nodeslymph
6、nodes of mandibular anglesubmandibular lymph nodessubmental lymph nodesdrain to Tonsilla palatina anatomy feature location appearance construction featuresTonsilla palatina blood vessel：descending palatine artery ascending palatine artery tonsillar artery tonsillar branch of ascending pharyngeal art
7、ery dorsal artery of tongue nerves：pharyngeal plexus superior maxillary nerve (2) branches glossopharyngeal nerve.Pharyngeal blood vessels and nerves arteries veins nerves Questions? how many sections has the pharynx been divided into? What are those anatomy defining points ? what is the composition of pharyngeal lymphatic ring (waldeyer lymphatic ring)? what is the blood apply of tonsilla palatina?
