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: Orthopaedics
[{'content': 'Neuropraxia is a condition characterized by \nSelect and explain. \nA. Division of nerve sheath, B. Division of axons, C. Division of nerve fibres, D. Physiological block', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. (d) Physiological blockRef Apley's 8th/ 231Patterns of nerve injuryNeuropraxiaAxonotmesisNeurotmesis* Reversible physiological nerve conduction block* It is seen in crutch palsy tourniquet palsy, and Saturday night palsy.* There is loss of conduction because of axonal interruption but the nerve is in continuity and the neural tubes are intact* Seen in closed fractures and dislocations* There is complete division of nerve with complete loss of conduction (i.e. epineurium, perineurium, endoneurium, & axon all have lost their continuity)* Seen in open wounds", 'role': 'assistant'}]