are sacs which contain the spinal cord and their covering meninges. Myelomen-ingocele protrude from the spine individually with the spina bifida. Typically, the sacs are closed before the birth of a human however, after birth, they fill with cerebrospinal fluid.
MYELOMENINGOCELE: “The formation of a myelomeningocele results in a sac of cerebrospinal fluid protruding from the meninges covering the spine.”