<prompt> Medulla oblongata is derived from ?TelencephalonDiencephalonMesencephalonMyelencephalon  <response>: Ans. is d i.e., MyelencephalonNervous system develops from ectoderm neuroectoderm. Nervous system develops from neural tube which in turn develops by process of neurulation, i.e. formation of neural plate and its infolding into neural tube. Structures formed from neural tube are :?A From cranial pa enlarged cephalic paGives rise to brain. Developmental pas are :i Forebrain prosencephalonTelencephalon : Cerebral hemisphere and lateral ventricle.Diencephalon : Optic cup and stalk gives rise to retina, pituitary, thalamus, hypothalamus, epithalamus, pineal gland, and third ventricle.ii Midbrain mesencephalonCerebral aqueduct.iii Hindbrain rhombencephalonMetencephalon : Cerebellum, ponsMyelencephalon Medulla oblongataB From caudal paGives rise to spinal cord. 