Card Set Information
Exma III Obio
What are some midline malformations?
Holoprosencephaly, Spina bifida, Meningioceles
All arise during gastrulation
During neuralation, too many stem cells causes what deformity?
Von Recklinghausen neurofibromatosis
Not enough neural crest cells unilaterally causes?
Not enough neural crest cells bilaterally causes?
What are the ranges for primary and secondary palate formation?
When is 90% of neuro and chondrocranial growth complete?
When is 90% of viscerocranial growth complete?
What soft tissues grow in response to intrinsic factors (genetic)?
Brain, viscera, glads, sense receoptors, nerves, BVs, muscles
What osseous centers grow in response to intrinsic factors?
Cartilaginous nasal septum, dentition, synchondroses
What soft tissues grow in response to extrinsic (epigenetic) factors?
Muscle, skin, muscosa, Bvs
What osseous growth sites are epigenetically controlled (respond to space formation)?
Cortical bone surfaces, articulations
Craniofacial growth is described by three theories, they are?
1. Intrinsic growth centers (Sicher)
2.Extrinsic functioning matrices (Moss)
3.Synthetic Theory (van Limbourgh)
What percentage of zygotes never implant by week 2?
What is the scott cartilaginous theory?
Maxillary hypoplasia when the septopremaxillary ligament is absent, no facial growth, you need the cartilage
What is a sequence?
One primary disorder that sets off a cascade affecting other structures
What is a syndrome?
Sequence is not clear, but the cause is
What is the difference between malformation and deformation?