| Name: | pharyngeal arch 1 |
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| Synonyms: | mandibular arch, visceral arch 1 |
| Definition: | The first pharyngeal arch, also known as the mandibular arch, forms the jaw. The first pharyngeal arch gives rise to elements of the jaw, with the most anteriorly positioned cranial neural crest cells contributing to mandibular arch structures, including Meckel's and palatoquadrate cartilages that constitute the lower and upper jaw respectively. |
| Ontology: | Anatomy Ontology [ZFA:0001612] |
| Name: | migratory neural crest |
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| Synonyms: | |
| Definition: | Migratory neural crest population that develops from premigratory neural crest. This group of neural crest has undergone ectomesenchymal transition and delamination. |
| Ontology: | Anatomy Ontology [ZFA:0007085] |