Soft palate(opens and closesoropharyngeal isthmus)Cranial cavityEarsChoanaeNasopharynxCVI vertebral levelPharynxEsophagusScapulaAxillary inletClavicleSuperior thoracic aperture(thoracic inlet)Manubrium of sternumTracheaVocal folds(together with other soft tissuestructures open and closecavity of larynx)Epiglottis(opens and closes laryngeal inlet)Oropharyngeal isthmusOral cavityNasal cavitiesOrbitsARib IVertebra TIOropharynxLaryngopharynxLaryngeal inletLarynx