Difference between revisions of "Talk:BGDA Lecture - Development of the Nervous System"
From Embryology
m (→Neuropores) |
|||
Line 32: | Line 32: | ||
==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 17:00, 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)