To be or Anencephaly medical understanding. This is a kind of severe congenital disability Nervous system disorder caused by pipe Neural Tube Defect:NTD), which is formed in the early stage of pregnancy, about a week after fertilization and 3-4 ของไข่ sperm. At this stage, embryonic tissue, which is divided into three layers.Usually the outer membrane to cell division, lift up to roll back to build a tubular nervous system (Neural Tube).But in the case of the frogman or Anencephaly distal end of pipe not close together. Cannot create the development of skull and brain completely
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.Frogman no part of the scalp, skull, meningitis, brain and the brain, but also a part of the brain stem. By only a thin membrane covered. Whereas concurrently.The baby unconscious, invisible, did not hear, feel no pain, but also can breathe because there are still parts of the brain stem. Which is the part of the brain that control breathing.
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