Diagram showing the regions of the adult face and neck related to the fronto-nasal process and the branchial arches. (Maxillary process visible at center right.)
Head end of human embryo of about thirty to thirty-one days.
|Precursor||first branchial arch|
- For the cranial structure, see Maxillary process of inferior nasal concha.
Continuous with the dorsal end of the mandibular arch, and growing forward from its cephalic border, is a triangular process, the maxillary process (or maxillary prominence), the ventral extremity of which is separated from the mandibular arch by a ">"-shaped notch.
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.