Term: pharyngeal arch 2 ectomesenchyme
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
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
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]