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: Unknown
[{'content': 'Which receptors are blocked in Myasthenia Gravis. \nSelect and explain. \nA. Ach receptors, B. Calcium receptors, C. Sodium receptors, D. Opioid receptors', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref. Guyton. 13th edition. Page.\xa0 96\nMyasthenia gravis is an autoimmune disease characterized by autoantibodies against the acetylcholine (ACh) receptor of the neuromuscular junction, result- ing in muscular weakness predominantly affecting the facial muscles. Females are affected more frequently than males.\n\nExtra ocular muscle weakness may lead to ptosis and diplopia; the weakness worsens with repeated contractions.\nRespiratory muscle involvement may lead to death.\u2028\n\nThere is an association with thymic hyperplasia and thymomas.\nTreatment is anticholinesterase agents, steroids, and thymectomy.', 'role': 'assistant'}]