The premaxilla is a bone of the upper jaw. It is an L-shaped bone first visible as a thin sliver in the anterodorsal region of the upper lip, anterior to the dorsal tip of the maxilla (5.7 mm). In the adult, the premaxilla is ligamentously attached to its counterpart at the midline and the kinethmoid posterodorsally, by the premaxillo-rostroid ligaments. Premaxillary teeth are absent in zebrafish. [ ORCiD:0000-0002-9900-7880 GOC:ymb ]
Synonyms: premaxillae
Term information
Term relations
- dermal bone
- premaxilla
- endoderm-derived structure
- overlaps some inter-premaxillary joint
- part of some palatoquadrate arch
- part of some dermatocranium