Axial Skeleton Development Flashcards Preview

Embryology > Axial Skeleton Development > Flashcards

Flashcards in Axial Skeleton Development Deck (70)
Loading flashcards...
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

neurofibromatosis (type 1)

1 in 4000
congenital disorder that affects ALL derivatives of neural crest cells and results in nerve sheath tumors and cafe aulait spots (pigmented spots in the skin)