Assertion: defect | /r/HasProperty | herniation
Facets:
Source sentences:
text: The most severe defects are a fissure along the entire length of the spinal column that leaves the meninges and spinal cord exposed (), or herniation through the skull of a saclike structure containing brain tissue and meninges ().is a major defect in which the brain is absent and there is only an exposed vascular mass with no bony covering.