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: Physiology
[{'content': 'If a single spinal nerve is cut, the area of tactile loss is always greater than the area of loss of painful sensations, because \nSelect and explain. \nA. Tactile information is carried by myelinated fast conducting fibres, B. Tactile receptors adapt quickly, C. Degree of overlap of fibres carrying tactile sensation is much less, D. In the primary sensory cortex tactile sensation is represented on a larger area', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Receptor field overlapping is lowest for temperature. Tactile receptor fields overlap higher than temperature. Highest overlapping is for pain. Temperature < Touch < Pain.\nSo the inverse will be true for loss of sensation. Loss of sensation highest in Temperature since it has no overlapping.\xa0 And the loss of sensation will be lowest for pain.', 'role': 'assistant'}]