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: Anatomy
Spinal cord develops from ? 
Select and explain. 
A. Neural tube, B. Mesencephalon, C. Rhombencephalon, D. Prosencephalon
A: Neural tube
Answer: A: Neural tube 
Explanation: Ans. is 'a' i.e., Neural tubeNervous 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 :? 1. From cranial pa (enlarged cephalic pa)Gives rise to brain. Developmental pas are :Forebrain (prosencephalon)Telencephalon : Cerebral hemisphere and lateral ventricle.Diencephalon : Optic cup and stalk (gives rise to retina), pituitary, thalamus, hypothalamus, epithalamus, pineal gland, and third ventricle.Midbrain (mesencephalon)Cerebral aqueduct.Hindbrain (rhombencephalon)Metencephalon : Cerebellum, ponsMyelencephalon : Medulla oblongata 2. From caudal paGives rise to spinal cord.