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': 'True about tonsils area) Develops from 4th pharyngeal archb) Lymph nodes drains to jugulodigastric nodec) It is endodermal derivatived) Rest on superior constrictor of the pharynxe) Long axis of tonsil is forward and medially \nSelect and explain. \nA. abc, B. bcd, C. ac, D. bd', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Palatine tonsil develops from 2nd pharyngeal pouch from endodermal lining.\nLymphatics drain into jugulodigastric nodes (upper deep cervical nodes).\nSuperior constrictor forms the bed of tonsil, i.e. tonsil rests on superior constrictor.\nLong axis of tonsil is directed from above downward and backward.', 'role': 'assistant'}]