olfactory pit การใช้

• By the upgrowth of the surrounding parts these areas are converted into pits, the olfactory pits, which indent the frontonasal prominence and divide it into a medial and two lateral nasal processes.
• As the olfactory pits deepen, said development forms the choanae, the two openings that connect the nasal cavity and the nasopharynx ( upper part of the pharynx that is continuous with the nasal passages ).
• The maxillary process forms the lateral wall and floor of the orbit, and in it are ossified the zygomatic bone and the greater part of the maxilla; it meets with the lateral nasal process, from which, however, it is separated for a time by a groove, the naso-optic furrow, that extends from the furrow encircling the eyeball to the olfactory pit.