White supremacy or white supremacism is a racist ideology centered upon the belief, and promotion of the belief, that white people are superior in certain characteristics, traits, and attributes to people of other racial backgrounds and that therefore white people should politically, economically and socially rule non-white people.
Neural tube defects occur when the bones of the spine do not correctly form, leaving the spinal cord and its nerves and coverings to protrude out through the skin (or lie just beneath it). The use of folate vitamins during pregnancy has decreased the incidence of neural tube defects.
Two major types of neural tube defects, spina bifida and anencephaly, are birth defects that. affect thousands of babies every year in the United States. â¤ Neural tube defects (NTDs) are birth defects that occur when the embryonic neural. tube, which ultimately forms the spinal cord and the brain, does not close properly. Anencephaly â the absence of the brain â is a fatal condition that occurs when the. upper end of the neural tube fails to close.