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Emb Orofacial Dev
Dental Embryology DENT-125
Structure | Origin | Future Structure |
---|---|---|
stomodeum | ectodermal depression enlarged by disintegration of oropharyngeal membrane | Oral cavity proper |
First pharyngeal or branchial arch | Fused mandibular processes and neural crest cells | Lower lip, lower face, mandible with associated tissue |
Maxillary process(es) | Superior and anterior swellings from mandibular arch and neural crest cells | Midface, upper lip sides, cheeks, secondary palate, posterior part of maxilla with associated tissue, zugomatic bones, part of temporal bones |
Frontonasal processes | ectodermal tissue and neural crest cells | medial and lateral nasal processes |
Nasal pits | nasal placodes | nasal cavities |
medial nasal processes | frontonasal process medial to nasal pits | middle of nose, philtrum region, intermaxillary segment |
intermaxillary segment | fused medial nasal processes | anterior part of maxilla with associated tissue, primary palate, nasal septum |
lateral nasal processes | frontonasal process lateral to nasal pits | nasal alae |