part of part of connects connects nasal cavity nasopharynx cranium posterior nasal aperture VHOG:0000545 posterior choana choana nasopharyngeal naris XAO:0000277 Wikipedia:Posterior_nasal_apertures internal naris MA:0001323 EHDAA:7842 EHDAA2:0000242 Opening/conduit between the nasal cavity and the nasopharynx[AAO] The choanae are separated by the vomer[WP]. posterior nasal apperture AAO:0000093 FMA:53143 EMAPA:17849 UBERON:0004771 posterior naris SCTID:244507001 internal naris