<prompt> All are derived from neural crest except ?Adrenal medullaPigment cell in skinCorneal stromaRetinal pigmented epithelium  <response>: Ans. is d i.e., Retinal pigmented epithelium Derivatives of neuroectodermi From neural tube : CNS brain, spinal cord, astrocytes, oligodendrocytes, ependymal cells, retina, pineal gland, neurohypophysis posterior pituitary, all cranial and spinal motor nerves.ii From neural crest : Neural crest derivatives are :?a Neural derivativesSensory neurons of 5th, 7th, 8th, 9th, 10th cranial nerve ganglia trigeminal, geniculate, sphenopalatine, submandibular, cochlear, vestibular, otic and vagal parasympathetic ganglia.Sensory neurons of spinal dorsal root ganglia.Sympathetic chain ganglia and plexus celiacpreaoicrenal ganglia, enteric plexus in GIT, i.e. Auerbachs and MeissnersParasympathetic ganglia and plexus of GIT.Schwann cells of peripheral nerves, satellite cells of all ganglia. Adrenal medulla, chromaffin cells, para follicular C-cells of thyroid gland.Melanocytes and melanoblasts. 