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development of the nervous system
Gives rise to PNS. Also: pseudounipolar gang cells, Schwann c, Multipolar gang c, Leptomeninges, Chromaffin c, Pigment c, Odontoblasts, aorticopulm septum heart, parafollicular c, sk and CT compenents pharyngeal arches
arise from monocytes
optic nerve and chiasma
derived from diencephalon
ectodermal diverticulum of primitive mouth cavity (stomodeum) also called Rathke's pouch. Remnants of Rathke's pouch may give rise to congenital cystic tumor a craniopharyngioma
develops from ventral evagination of hypothalamus (neuroectoderm of neural tube)