Congenital Malformations
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| This NEUROSCIENCE stack covers Congential Malformations. | (blank)
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| Q: What is spina bifida occulta? | A: Failure of dorsal portions of vertebrae to fuse with one another (covered by skin and hair with no neurological symptoms).
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| Q: What is meningomyelocele? | A: Failure of two or more vertebrae to fuse with meninges of spinal cord bulging through opening (neurological symptoms present).
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| Q: What is rachischisis? | A: Failure of vertebrae to fuse with one another, failure of neural folds to close (nervous tissue exposed to surface).
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| Q: What is another name for rachischisis? | A: Myeloschisis.
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| Q: What is meningoencephalocele? | A: Ossification deficit in the occipital bone of the skull; part of the brain may penetrate through the opening into a meningeal sac.
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| Q: What is anencephalus? | A: Bones of the skull are absent; cephalic neural tube fails to close; degenerated brain tissue exposed to surface; eyes bulge forward; neck is absent.
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| Q: What is hydrocephalus? | A: Abnormal accumulation of CSF within the ventricular system; usually an obstruction of the aqueduct of Sylvius; widening of skull sutures; enlargement of the head.
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