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31 Cards in this Set
- Front
- Back
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Neural plate forms from what?
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Ectoderm - induced by notochord
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Growth and invagination of this results in the neural groove
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Neural plate
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This closes to form the neural tube
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Neural groove
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This gives rise to all structures of the CNS
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Neural tube
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Neural crest arises from this as the neural tube closes
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Neuroectoderm
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Arachnoid and pia come from where?
Dura? |
A & P - neuroectoderm
D - mesoderm |
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Neurons of the PNS, Glia cells of PNS and the inner meninges come from where?
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Neuroectoderm
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Failure to or late closure of the anterior neuropore produces what?
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Anecephaly
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Failure of or late closure of the posterior neuropore produces what?
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Spina bifida
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The spinal cord develops from what end of the neural tube?
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Caudal end
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Rostral portions of the neural tube form which three primary vesicles
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Prosencephalon
Mesencephalon Rhombencephalon |
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The ventricular system develops from where?
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Neural tube lumen
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Where is the cervical flexure?
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Junction of rhombencephalon and spinal cord
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Where is the cephalic flexure?
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Junction of mesencephalon and rhombencephalon
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Where is the pontine flexure?
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Subdivides the rhombencephalon
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Prosencephalon and rhombencepahlon subdivide resulting in which 5 secondary vesicles?
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Telencephalon
Diencephalon Mesencephalon Metencephalon Mylencephalon |
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This expands and grows to surround diencephalon and midbrain
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Forebrain (prosencephalon)
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Growth on the dorsal aspect of this results in the formation of the cerebellum
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Metencephalon
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Which flexures straighten and which remain at 90˚?
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Cervical and Pontine straighten
Cephalic remains |
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Forebrain gives rise to what secondary cesicles?
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Telencephalon and Diencephalon
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Hindbrain (rhomencephalon) gives rise to what secondary vesicles?
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Metencephalon and myencephalon
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What is the brain stem made up of?
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Midbrain, pons, medulla
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Spina bifida w/hair on back
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Occulta
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Spina bifida with a sac containg meninges and CSF
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Meningocele
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Spina bifida with a sac containing Spinal cord, meninges and CSF
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Meningomyelocele
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Spina bifida from being exposed to amniotic fluid, neural tube doesn't fold
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Rachischisis
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Longitudinal groove in ventricular surface of lateral wall of neural tube
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Sulcus limitans
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Two nuclear groups on each side of the neural tube that form the lateral walls
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Alar and basal plates
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This is dorsal to the suclus limitans of the neural tube and is associated with sensory functions
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Alar plate
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This is ventral to the sulcus limitans of the neural tube and is associated with motor functions
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Basal plate
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What supplement in the diet can decrease neural tube defects
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Folic Acid
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