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25 Cards in this Set
- Front
- Back
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Brain Primary Vesicles
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prosencephalon
mesencephalon rhombencephalon |
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Prosencephalon -->
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telen and Dien
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Mesencephalon -->
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Mesen
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Rhombencephalon -->
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Meten
Mylen |
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Telecephalon --->
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cerebral hemi
lateral ventricles |
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Diencephalon -->
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thalamus
third ventricle |
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2nd Mesencephalon -->
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Midbrain
Aqueduct |
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Metencephalon -->
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Pons and Cerebellum
upper 4th ventricle |
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Mylencephalon -->
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medulla
lower 4th ventricle |
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Neuroectodeerm -->
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CNS neurons
ependymal cells oligoendroglia astrocytes |
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Neural crest
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PNS neurons
Schwann cells |
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Mesoderm
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Mcroglia
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Neural Tube Defects
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Neuropores don't fuse at 4th weeks
amniotic and spinal canal connect low folic acid before an during pregnancy ^ AFP in amniotic and serum ^AChE confirms |
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Spina bifigda occulta
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bony spinal canal doesn't close
lower vertebral no herniation intact dura mole or hair at level |
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Meningocele
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meninges herniate through spinal canal
normal AFP |
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meningomyelocele
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meninges and spinal cord
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Anencephaly
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malformed anterior nueral tub --> no forebrain
open calvarium ^AFP, polyhydramnios (no swallowing center!) Type 1 maternal diabetes Folate decreases risk! |
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Holopresencephaly
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left and right hemis do not separate (week 5-6)
sonic hedgehog? moderate = cleft severe = cyclops |
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Chiari II
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herniation of cerebellar tonsil, vermis through magnum
aqueduct stenosis --> hydrocephalus lumbosacral myelomeningocele and paralysis |
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Dandy Walker
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agenesis of cerebellar vermis
enlargement of 4th ventricle hydrocephalus spina bifida |
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Syringomyelia
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cyst within spinal cord (C8-T1)
anterior comissure fibers --> cape-like loss of pain and temp sensation in upper extremities Chiari I |
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Tongue development
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1st and 2nd branchial arches = ant 2/3
V3 and VII 3rd and 4th = post 1/3 IX and X motor = XII |
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Tongue taste
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VII, IX, X
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Tongue pain
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V3, IX, X
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Tongue motor
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XII
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