<prompt> Nucleus pulposus is derived from -SclerotomeMyotomeNotochordNone  <response>: 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. 