This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
[{'content': 'Nucleus pulposus is derived from - \nSelect and explain. \nA. Sclerotome, B. Myotome, C. Notochord, D. None', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Notochord Development of vertebral column o The human nervous system develops from neuroectoderm. o During development, behind the neuroectoderm lies the mesoderm (paraxial mesoderm) that encloses the notochord (a derivative of endoderm). o This paraxial mesoderm give rise to somites, o Somites further differentiated into i) Dermatomyotome:- Give rise to skeletal muscles and dermis. ii) Sclerotomes:- Give rise to the vertebral column. o Sclerotomes which surround notochord starts projecting posteriorly (dorsally) to surround neural tube and forms. Ventral sclerotomes :- Give rise to the vertebral body and annulus Jibrosus. Lateral sclerotomes :-Give rise to vertebral arch (pedicle and lamina). Dorsal sclerotomes :-Give rise to the spinous process. o The notochord forms the nucleus pulposus.", 'role': 'assistant'}]