Term
| What is the secondary neurulation? |
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Definition
| a growth that comes from the primitive streak called the caudal eminence. This will eventually form a lumen and fuse with the neural canal around S2(conus medullaris) |
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Term
| When do neural crest cells develope? |
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Definition
| As the neural plate is folding up to make the neural tube |
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Term
| What is Hirschsprung's Diesease? |
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Definition
| Failure of enteric ganglia to develope (from neural crest cells) results in parts of the bowel being unable to initiate peristalsis |
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Term
| Neural crest cells give rise to? |
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Definition
| Prevertebral ganglia, enteric ganglia, dorsal root ganglia, melanocytes, craniofacial cartiledge and bone, pia and arachnoid mater, etc |
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Term
| What is the central canal? |
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Definition
| Cerebro-spinal fluid filled space running the entire spinal cord and contiguous with the ventricles of the brain. Remains of the developmental neural tube |
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Term
| What is the mantel layer of the brain and spinal cord? |
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Definition
| The mantel layer of the brain and spinal corWha is the presumptive grey matter |
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Term
| What is the marginal layer of the brain and spinal cord? |
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Definition
| The marginal layer is the presumptive white matter of the brain and spinal cord |
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Term
| What forms the neural arch? |
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Definition
| The lamina and pedicle of each vertebrae make one neural arch |
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Term
| How does the neural arch form |
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Definition
| Sclerotome on either end of the neural tube grows towards each other and forms the vertebrae |
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Term
| The ribs form from what cell? |
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Definition
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Term
| The sternum forms from what cell? |
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Definition
| Mesoderm (mesenchymal condensations) |
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Term
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Definition
| Malformation of the neural arch leaving the spinal cord exposed |
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Term
| Neural tube defects can be broadly categorized into what two categories? |
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Definition
Defects arising from failure of the neural tube to close (less severe)
Defects arising from failure of the neural tube to differentiate (more severe) |
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Term
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Definition
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Term
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Definition
| Having to do with the spinal cord |
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Term
| What does Encephalo mean? |
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Definition
| having to do with brain tissue |
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Term
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Definition
| having the dura-arachnoid sleeve continuous with the skin |
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Term
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Definition
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Term
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Definition
| Having to do with the brain |
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Term
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Definition
| Having to do with the backbone |
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Term
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Definition
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Term
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Definition
| External occipital protuberance of the skull |
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Term
| What are the causes of Neural Tube defects? |
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Definition
| Insulin, High Plasma Glucose, Maternal Diabetes, Retinoic Acid, Valprioic Acid, Hyperthermia, Vitamin A |
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