This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2017, Subject name: Anatomy
[{'content': "Derivative of ultimobranchial body \nSelect and explain. \nA. Thyroid, B. Capsule of thyroid, C. Parafollicular 'C' cells, D. 2nd branchial pouch", 'role': 'user'}, {'content': 'Answer: C \nExplanation: PHARYNGEAL POUCH DEVELOPS INTO 1st Tympanic cavity and eustachian tube 2nd Tonsillar epithelium 3rd Ventrally: thymus Dorsally: inferior parathyroid 4th Superior parathyroid 5th Ultimobranchial body The ultimobranchial body will be found attached to pharyngeal pouch 4. It receives some neural crest cells which will form the parafollicular C cell of thyroid gland; which help in the production of hormone calcitonin.', 'role': 'assistant'}]