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(A) Left lateral view of nasal cavity structure (yellow) at anterior region of skull. Dorsal (B) and ventral (C) views of nasal cavity. Anterodorsal (1), posterodorsal (4) and anteroventral (2) diverticula, and small posteroventral salience formed by fossa on wall (3) in cavum nasi proprium anterior to nasopharyngeal duct (ND).
