lec 2 Flashcards
membranous neurocranium originate from ?
“cranial neural crest cells”
how can calvarial (skull cap) remodeled and what is the importance ?
Remodeled by : becaus of softness of the bone + loose connections at suture
imposrtance : for molding of fatal cranium.
origin of certilegenous neurocranium ?
occipital somite , neural crest cells
write the development of the parts of bisalis interna?
1- body of sphenoid => hypophyseal cartliges
2-greater wings of sphenoid => ala temporalis
3- lesser wing of sphenoid =>ala orbitalis
4- petrius and mastoid part of temporal bones => periotic capsule
[ later they all fuse except the opening of which cranial nerve leave ]
how can we obtain blood sample from infant ?
by taking sample from SSS fron palpable anterior fontanelle area
failure of cranial neuropore to close is ?
cranio-schisis
the forms of cranio-schisis that may survive is ?
1- meningiocele or meningioencephalocele
scaphocephaly is :
premature closure of sagittal suture
acrocephaly is
premature closure of coronal suture
tower skull is
is acrocephaly
microcephaly caused by
fail of growth of the brain + fail of skull to expand
premature closure of lambdoid and coronal suture on one side of the skull is ?
plagio-cephaly
premature closure of all suture is
kleeblattchadel
kleeblattchadel shape result from
forcing the brain growth through anterior and sphenoid fontanell
newborn baby presented with craniosyntosis , midface hypoplasia , shallow orbit , acular proptosis , mandibular proganthisim , progressive hydrocephalus , with no mental retardation .
what is your diagnosis ?
crouzon syndrome
