Neuro Final 1

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Author:
jld15
ID:
290778
Filename:
Neuro Final 1
Updated:
2014-12-06 13:54:21
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Neuro Final
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Neuro Final 1
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  1. Day 12 -15
    • Morulla attaches to uterine wall and becomes chorion
    • Inner cell mass differentiates into a 2 layer primitive germ disc (ectoderm/ endoderm)
    • Formation of mesoderm
  2. Day 30
    • Formation of embryo
    • Somites differinate into 3 layers
    • ----- sclerotome
    • -----dermatome
    • ----- myotome
    • development of ventral root of each SN
  3. sclerotome
    skeletal
  4. dermatome
    circulatory
  5. myotome
    muscular
  6. Day 60
    Embryo becomes fetus
  7. Neural plate sequence (formation of CNS)
    Neural plate --> neural groove --> neural tube --> CNS
  8. Neurocele
    Hole in neurotube that turns into ventricular system
  9. Prosencephalon
    • Forebrain
    • (telencephalon- endbrain , diencephalon- between brain)
  10. mesencephalon
    midbrain
  11. rhombencephalon
    (metencephalon-pons, myelencephalon- medulla oblongata)
  12. mesencephalic flexure
    prosencephalon grows faster than the rest of the neurotube. The overlying skull cant keep up with it and bends at the point of the midbrain causing the prosencephalon to be perpendicular to the rest of the CNS
  13. middle mesoderm breaks down into ____________
    31 somites, 1 for each SN
  14. neural crest cells
    form the dorsal root ganglia of SN and ganglia of CN 5,7,8,9

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