This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
[{'content': 'A twitch of motor unit is called \nSelect and explain. \nA. Myoclonic jerk, B. Tremor, C. Fasciculation, D. Chorea', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Fasciculations are jerky, visible contractions of groups of muscle fibres as a result of pathological discharge of spinal motor neurons. (REF TEXTBOOK OF MEDICAL PHYSIOLOGY GEETHA N 2 EDITION, PAGE NO - 50)', 'role': 'assistant'}]