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Face, nasal cavities, palate (Frontonasal process (nasal placodes form…
Face, nasal cavities, palate
Frontonasal process
nasal placodes form
mesoderm at the margins of np
medial nasal process
nasal pits formed in placodes
fuse
nasal sac
primitive choana
fuse
nasal septum
inter maxillary segment
philtrum
pre-maxilla
posterior forms primary palate
incisive foramen
bridge of nose
no fusion
median cleft lip
lateral nasal process
nasolacrimal groove forms b/w lateral nasal processes and maxillary processes
ectoderm on floor of groove
nasolacrimal duct
drains in inferior meatus
forms sides of nose
Forehead
1st pharyngeal arch
L+R Maxillary proceses (lateral to stomodeum)
upper lip
cheek
maxilla (by intramembraneous ossification)
lateral palatine shelves/processes
2º palate
anterior
hard palate
posterior
soft palate
L+R Mandibular processes (caudal/inferior to stomodeum)
fusion of L + R processes
chin
lower cheek
lower lip
mandible (by intramembraneous ossification)
