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 fibers that occur as a result of pathologic discharge of spinal motor neurons.
Reference: Ganong’s Review of Medical Physiology 25 Ed page no 110​