SPINA BIFIDA By N., Pam M.S. - April 13, 2013 a developmental defect where the vertebral canal does not close properly around the spinal cord. This neural defect consequently in part of the spinal cord protruding from the body surface. SPINA BIFIDA: "Spina bifida causes weakness in the legs and feet and problems with bowel and bladder control, movement and sensation." Related Psychology Terms NEURAL TUBE SPINAL CANAL GRAY COMMISSURE MYELOCELE EPENDYMA MOTOR PATHWAY FORAMEN MAGNUM SPINAL CORD DISEASE SPINAL ROOT SECOND-ORDER NEURON Cite this page: N., Pam M.S., "SPINA BIFIDA," in PsychologyDictionary.org, April 13, 2013, https://psychologydictionary.org/spina-bifida/ (accessed October 17, 2019).