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Last minute embryo

telencephalon cerebral hemisphere; lateral ventricles
diencephalon thalamus, hypothalamus, optic nerves/tracts; third ventricle
mesencephalon midbrain; aqueduct
metencephalon pons, cerebellum; upper part of fourth ventricle
myelencephalon medulla; lower part of 4th ventricle
neuropores fail to fuse 4th week leads to persistent connection between amniotic cavity and spinal canal
increased AFP + acetylcholinesterase in CSF neural tube defect
increased AFP alone where? amniotic fluid and maternal serum
spina bifida occulta failure of bony spinal canal to close. dura intact
meningocele meninges herniate through spinal canal defect
meningomyelocele meninges and spinal cord herniate through spinal canal defect
adenohypophysis surface ectoderm
lends of eye surface ectoderm
sensory organs of ears surface ectoderm
epithelial lining of oral cavity surface ectoderm
anal canal below the pectinate line surface ectoderm
salivary, sweat, and mammary glands surface ectoderm
Created by: ilovemusic007



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