<prompt> All of the fallowing are neural tube defects exceptMyelomeingocoeleAnencephalyEncephaloceleHoloprosencephaly  <response>: Holoprosencephaly is a developmental disorder of the brain that results from defective cleavage of the prosencephalon. It is thus a malformation of cortical development and not a neural tube defect. The major neural tube defect include:Spina bifida occulta Anencephaly Diastematomyelea Meningocele Dermal sinus Lipoma involving conus medullarisMeningomyelocele Tethered cordEncephelocele Syringomyelia 