| Term: | pharyngeal arch 2 ectomesenchyme |
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| Note: | This page represents a term created by the combination ("post-composition") of two ontology terms. For more information on the individual terms, click the hyperlinked name. |
| Name: | pharyngeal arch 2 |
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| Synonyms: | hyoid arch, visceral arch 2 |
| Definition: | The second pharyngeal arch, also known as the hyoid arch, forms jaw support structures. Anteriorly positioned cranial neural crest cells, which align with rhombomeres 4/5, contribute to the hyoid arch structures including the ceratohyal and hyosymplectic cartilages. |
| Ontology: | Anatomy Ontology [ZFA:0001611] |
| Name: | ectomesenchyme |
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| Synonyms: | |
| Definition: | Portion of tissue that develops from the cranial neural crest and which cells populate a series of pharyngeal arches from which develops the support skeleton of the jaw and gills. |
| Ontology: | Anatomy Ontology [ZFA:0005771] |