Talk:BGDA Lecture - Development of the Nervous System: Difference between revisions
From Embryology
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==Early Brain Structure== | ==Early Brain Structure== | ||
{| | |||
[[ | ! Primary Vesicles | ||
! Secondary Vesicles | |||
|- | |||
| [[File:CNS primary vesicles.jpg|600px]] | |||
Week 4 - rostral neural tube forms 3 primary brain vesicles | |||
# '''prosencephalon''' (forebrain) | |||
# '''mesencephalon''' (midbrain) | |||
# '''rhombencephalon''' (hindbrain) | |||
| [[File:CNS secondary vesicles.jpg|600px]] | |||
Week 5 - 3 primary vesicles develop to form 5 secondary vesicles | |||
# telencephalon''' (endbrain, forms cerebral hemispheres) | |||
# '''diencephalon''' (between brain, forms optic outgrowth) | |||
# '''mesencephalon''' (midbrain) | |||
# '''metencephalon''' (behind brain) | |||
# '''myelencephalon''' (medulla brain) | |||
|} | |||
===Textbook collapse table=== | ===Textbook collapse table=== |
Revision as of 16:00, 18 May 2017
2017
Monday 29 May 2017 09:00 AM - 10:00 AM Development of the nervous system Kensington - Rex Vowels Theatre Hill, Mark
Neuropores
Cranial Neuropore | Caudal Neuropore |
---|---|
(stage 11) | (stage 12) |
- cranial (anterior) neuropore closes before caudal (posterior)
- failure to close - Neural Tube Defects (NTD), severity dependent upon level, spina bifida anancephaly (More? [neuron2.htm Neural Abnormalities])
- found that supplementation of maternal diet with folate reduces incidence of NTDs
- A randomised controlled trial conducted by the Medical Research Council of the United Kingdom demonstrated a 72% reduction in risk of recurrence by periconceptional (ie before and after conception) folic acid supplementation (4mg daily).
- Women who have one infant with a neural tube defect have a significantly increased risk of recurrence (40-50 per thousand compared with 2 per thousand for all births)