Embryology of Nervous System
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The human brain is the most complex mass of protoplasm on earth-perhaps even in our galaxy.
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Embryology of Nervous System
- 6. • 6
- 14. • The spinal cord develops from the caudal 2/3 of the neural tube
- 22. • Pineal gland: sleep-wake cycle, secretes melatonin. • Epithalamus: masticatory and swallowing functions. • Thalamus: major relay of sensory input to cerebral cortex.
- 23. Diencephalon
- 37. 2 Microcephaly Anencephaly Chiari0Malforma3on Head normal or smallHead normal or small DiaDia halus , T 21halus , T 21 Ventriculomegaly HydranceHydrance Hydranecphaly Encephalocele Occipital EncephaloceleOccipital Encephalocele Imaging FindingsImaging Findings Herniated brain tissueHerniated brain tissue „„cyst within the cystcyst within the cyst““ Ventriculomegaly 70Ventriculomegaly 70-- 80%80% Microcephaly 25%Microcephaly 25% PolyhydramniosPolyhydramnios OligohydramniosOligohydramnios CAVE:CAVE: Associated with multipleAssociated with multiple syndroms ( Meckelsyndroms ( Meckel-- Gruber )Gruber ) Pilu Holoprosencephaly Hemimegalencephaly Arachnoid0cyst ACC SOP Schizencephaly SchizencephalySchizencephaly PFAFluidACyst Yong seok et a Vascular0 Malforma3ons Circle of Willis MallformationCircle of Willis Mallformation
- 40. Axial0Planes
- 64. Sagibal0Planes00
- 71. 30 Basic Examniation ChecklistBasic Examniation Checklist Head + NeckHead + Neck Midline & FalxMidline & Falx Cavum septi pellucidiCavum septi pellucidi Lateral cerebral ventriclsLateral cerebral ventricls Choroid PlexusChoroid Plexus CerebellumCerebellum Cisterna magnaCisterna magna Sunday, July 28, 13 • Head & Neck • Midline & Falx • Cavum septipellucidi • Lateral cerebral ventricles • Choroid plexus • Cerebellum • Cisterna magna
- 72. 32 Microcephaly Anencephaly Chiari0Malforma3on Head normal or smallHead normal or small DiaDia halus , T 21halus , T 21 Ventriculomegaly HydranceHydrance Hydranecphaly Encephalocele Occipital EncephaloceleOccipital Encephalocele Imaging FindingsImaging Findings Herniated brain tissueHerniated brain tissue „„cyst within the cystcyst within the cyst““ Ventriculomegaly 70Ventriculomegaly 70-- 80%80% Microcephaly 25%Microcephaly 25% PolyhydramniosPolyhydramnios OligohydramniosOligohydramnios CAVE:CAVE: Associated with multipleAssociated with multiple syndroms ( Meckelsyndroms ( Meckel-- Gruber )Gruber ) Pilu Holoprosencephaly Hemimegalencephaly Arachnoid0cyst ACC SOP Schizencephaly SchizencephalySchizencephaly PFAFluidACyst Yong seok et a Vascular0 Malforma3ons Circle of Willis MallformationCircle of Willis Mallformation
- 78. 78