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 of the following receptors is responsible for measuring the intensity of a steady pressure on the skin surface? \nSelect and explain. \nA. Pacinian corpuscle, B. Ruffini ending, C. Merkel's disk, D. Meissner's corpuscle", 'role': 'user'}, {'content': 'Answer: B \nExplanation: The Ruffini ending is a tonic receptor that produces a train of action potentials proportional to the intensity of pressure applied to the skin. The Pacinian corpuscle is a very rapidly adapting receptor that fires once or twice in response to skin deformation. It can produce a continuous train of action potentials if the stimulus is repetitively applied and withdrawn. Therefore, the Pacinian corpuscle is used to encode vibration.', 'role': 'assistant'}]