ORalHisto Quiz3 Flashcards
when does the face and other tissues start to form
4th week (embryonic period)
facial development includes the formations of:
primitive mouth (stomodeum)
mandibular arch
maxillary process
frontonasal process
nose
what week is fetal period
4-12th week
the first event in the development of the face (4th week prenatal)
disintegration of the membrane
what week does the primitive mouth increase in depth and enlarges
4th week
most facial structures develops through
fusion
initially located between these adjacent swellings due to proliferation, differentiation and morphogenesis
cleft/furrow
where is growth initially most rapid
upper face (to keep up with the development of the brain)
forehead ceases to grow at what age
12
the stomodeum is limited in depth by the?
oropharyngeal membrane
what is the temporary structure that separates the stomodeum from the primitive pharynx
oropharyngeal membrane
stacked bilateral swellings of tissue inferior to the stomodeum
pharyngeal arches
how many pairs of pharyngeal arches
6
the pharyngeal arches is covered by?
ectoderm
the pharyngeal arches is lined by?
endoderm
what does the pharyngeal arches support
primitive pharynx
the primitive pharynx is cranial most part of the?
foregut
the primitive pharynx is caudal to the?
stomodeum
what separates the primitive pharynx from the stomodeum
buccopharyngeal membrane