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