This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
[{'content': 'A shift to the right in the biological activity dose- response curve for a hormone with no accompanying change in the maximal response indicates: \nSelect and explain. \nA. Decreased responsiveness and decreased sensitivity, B. Increased responsiveness, C. Decreased sensitivity, D. Increased sensitivity and decreased responsiveness', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C. Decreased sensitivityRight or left shifts in dose-response curves indicate changes in sensitivity. Changes in maximal biological response indicate changes in responsiveness. Because there is no change in maximal response, the correct answer must relate to a change in sensitivity only. A right shift indicates decreased sensitivity.', 'role': 'assistant'}]