Flashcards in Axial Skeleton Development Deck (70)
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61
dura mater arises from
ectoderm
62
spina bifida occulta
involves vertebral arch, patch of hair
63
spina bifida cystica
involves a cyst like sac containing CSF
64
spina bifida with meningocele
onyl meninges
65
spina bifida with meningomyelocele
involves some neural tissue (roootlets) meninges and CSF
66
spina bifida with myeloschisis
neural folds fail to fuse posteriorly
spinal cord is open to exterior
SERIOUS
67
spinal dural sinus
indicated by a dimple through the lumbar region, indicates the region of closure of the caudal nueropore; can be connected through a fibrous cord to dura mater
68
tethered cord syndrome
defect in secondary neurulation; conus medullaris and filum terminale are abnormally fixed to the vertebral column; associated with lower limb and bladder control problems
69
hirschprungs disease
1-5,000
delay in passage of meconium
results in constipation, vomiting, abdominal distension and rupture of cecum
characteristic feature revealed by barium enema
results from mutation in RET protooncogene
neural crest fail to reach the hind gut
70
