This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Embryology, Subject name: Anatomy
[{'content': 'Chromaffin cells are derived from: \nSelect and explain. \nA. Neural crest, B. Surface ectoderm, C. Neuroectoderm, D. Endoderm', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. A Neural crestRef: Netter's Atlas of Neurosciences, 3rd ed. pg. 133Derivatives of neural crest (mnemonic: N.O.P.E)* Melanocytes* Schwan cells* Adrenal medulla (Chromaffin cells)* Odontoblasts* Parasympathetic ganglia of gut* Parafollicular cells of thyroid* Pia and arachnoid matters* Endocardial cushions and aortopulmonary septum in heartDerivatives of neuroectoderm:* All CNS neurons astrocytes, oligodendrocytes, ependymocytes, neurohypophysis and pineal gland.", 'role': 'assistant'}]