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
A twitch of motor unit is called 
Select and explain. 
A. Myoclonic jerk, B. Tremor, C. Fasciculation, D. Chorea
C: Fasciculation
Answer: C: Fasciculation 
Explanation: 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)