| Name: | pharyngeal arch 1 |
|---|---|
| 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: | mesenchymal cell |
|---|---|
| Synonyms: | mesenchymal cells |
| Definition: | A cell that normally gives rise to other cells that are organized as three-dimensional masses, rather than sheets. |
| Ontology: | Anatomy Ontology [ZFA:0009081] |