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Neurology
| NS is the system most suscepti | first systems to begin to deve |
|---|---|
| notochord form ........... which form NS | neural tube |
| Regresses يضمحل | |
| In addition to neural tube notochord form | |
| Fusion of the neural folds takes | 10 days |
| Neurulation begins in the | 3 week |
| Notochord-driven from | Ectoderm |
| o Anterior neuropore closes on day ..... Posterior neuropore closes on day....... | |
| Spina bifida most common in | lumbosacral region |
| Spina bifida ( most common) Anencephaly , Rachischisis |