<prompt> All of following are neural tube defects except:MyelomeningoceleAnencephalyEncephaloceleHoloprosencephaly  <response>: d. HoloprosencephalyRef: Nelsons 20e p 2802-2803, Ghai 8e p 575-577Different types of neural tube defects are: Spina bifida occulta, meningocele, encephalocele, myelomeningocele, anencephaly, caudal regression syndrome, dermal sinus, tethered cord, syringomyelia, diastematomyelia and iniencephaly Holoprosencephaly is incomplete separation of the cerebral hemispheres across the midline. 