Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
neural tube defect (dysraphism)
|
developmental defect (week 3 to 4 of gestation)
|
|
craniorachischisis
|
whole neural system NTDS
|
|
total dysraphism of brain is...
|
cranioschisis or anecephaly
|
|
spinal cord formation
|
notocord induces mesderm to form vertebrae...reciprocal induction exists b/w nervous system and vertebrae
|
|
spina bifida
|
defective development of caudal neuropore
|
|
spina bifida occulta
|
occult = hidden
no neural tissue involved around L5-S1 in 2% hard to find! |
|
spina bifida cystica
|
spina bifida meningocele
spina bifida meningomyelocele spina bifida myelocele |
|
spina bifida with meningocele
|
cele = sac/cyst
sac contains menginges/CSF intact nervous system |
|
spina bifida with meningomyelocele
|
spinal cord and nerve roots are included in sac
more common than meningocele many die from infections neural deficits can occur |
|
spina bifida with myelocele
|
most severe of spina bifida cystica
spinal cord completely open! myelo = SPINAL CORD |
|
hydrocephalus
|
associated with myelomeningocele
abnormality called Chiari malformation |
|
Chiari malformation
|
medullary portion of brainstem and portions of cerebellum herniate through foramen magnum
disrupts normal drainage of CSF from 4th ventricle into subarachnoid space |
|
encephalocele
|
skin covered NTD of brain.
tissue protrudes through the skull large ones can affect neurologic function/survival |
|
anencephaly/meroanencephaly
|
most of brain is exposed/extruding
abnormal forebrain development and defect in calvaria failure of rostral neuropore to close 1/1000 birts 4x in females extrauterine life is impossible. |