ABCFold overlyingpalatopharyngealsphincterTorus levatorius(fold overlyinglevator veli palatini)Torus tubariusPharyngeal recessPharyngeal tonsilPharyngeal opening of thepharyngotympanic tubeSalpingopharyngeal foldPalatine tonsilPalatopharyngeal arch(overliespalatopharyngeusmuscle)Laryngeal inletEsophagusTracheaValleculaLingual tonsilsPalatoglossal arch(margin of oropharyngeal isthmus)TongueNasal cavityNasopharynxOropharynxLaryngopharynxOropharyngealisthmusPharyngeal tonsilChoanaeTorus tubariusTorus levatoriusSoft palatePalatopharyngeal archPalatopharyngeal archPalatine tonsilValleculae (anterior to epiglottis)Laryngeal inletEsophagusPiriform fossaLingual tonsilLingual tonsilPalatine tonsilEpiglottisValleculaPiriform fossaSalpingopharyngealfoldPharyngealrecessesNasal cavityOral cavityTracheaLarynxPharynxEsophagus