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| | Gray, Henry. 1918. Anatomy of the Human Body. Page 194 |
 | | The nasal cavities are two irregular spaces, situated one on either side of the middle line of the face, extending from the base of the cranium to the roof of the mouth, and separated from each other by a thin vertical septum. |
 | | They open on the face through the pear-shaped anterior nasal aperture, and their posterior openings or choanæ communicate, in the fresh state, with the nasal part of the pharynx. |
 | | It presents, in front, a large, triangular notch, which receives the cartilage of the septum; and behind, the free edge of the vomer. |
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