pharyngeal arches Flashcards
2 types of union
merging
fusion
stomodeum
oral pit, becomes the mough
structures from frontal process
forehead
middle nose
upper lip and dental arch
structures from maxillary process of mandibular arch (1)
cheeck upper lip maxillary zygomatic part of temporal
structures from mandibular process of mandibular arch (1)
mandible
lower jaw
dimple formation
meeting of the 2 mandibular processes
buccopharyngeal membrane
covering of stomodeum
where ectoderm meets endoderm
nasal placodes
thickened epithelium on frontal process
nasal pit
future nostril, in the center of nasal placode
nasomedial process forms
upper lip and jaw with the maxillary process
primary palate
nasolateral process forms
sides and wings of nose
nasolacrimal groove
between the nasolateral process and maxillary process
closes to form the lacrimal duct
intermaxillary segment forms
formed from the merging of the nasomedial segments
forms the middle of nose, philtrum of upper lip, dental arch, and primary palate
mandibular process forms
lower lip and jaw
maxillary process
upper lip and jaw with nasomedial process
palatal shelves–> secondary palates
cleft lip
failure of fusion between the nasomedial process and maxillary process
macrostomia
failure of the maxillary and mandibular processes to fuse
mouth is large
microstomia
over fusion of maxillary and mandibular processes
frontaonasal dysplasia
underdevelopment of frontal prominence
bifid nose and wideset eyes
oblique facial cleft
failure of nasolateral process and maxillary processes to join