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
[{'content': 'Enamel of teeth is derived from: \nSelect and explain. \nA. Endoderm, B. Mesoderm, C. Ectoderm, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: In general terms, the ectodermal germ layer gives rise to organs and structures that maintain contact with the outside world:The central nervous system;The peripheral nervous system;The sensory epithelium of the ear, nose, and eye; andThe epidermis, including the hair and nails.In addition, it gives rise to:Subcutaneous glands,The mammary glands,The pituitary gland,And enamel of the teeth.', 'role': 'assistant'}]