This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Remnant of notochord is \nSelect and explain. \nA. Annulus fibrosus, B. Nucleus pulposus, C. Ligament flavum, D. Interansverse ligament', 'role': 'user'}, {'content': 'Answer: B \nExplanation: HUMAN EMBRYOLOGY-INDERBIR SINGH TENTH EDITION-PAGE NO:60As the embryo enlarges, the notochord elongates considerably and lies in the Midline, in the position to be later occupied by the veebral column. However, the notochord doesn&;t give rise to the veebral column. Most if it disappears, but pas of it persist in the region of each interveebral disc as the nucleus purposes.', 'role': 'assistant'}]