ankle clonus (foot clonus) a series of abnormal reflex movements of the foot, induced by sudden dorsiflexion, causing alternate contraction and relaxation of the triceps surae muscle.toe clonus abnormal rhythmic contraction of the great toe, induced by sudden passive extension of its first phalanx.wrist clonus spasmodic contraction of the hand muscles, induced by forcibly extending the hand at the wrist.oe clonus abnormal rhythmic contraction of the great toe, induced by sudden passive extension of its first phalanx. wrist clonus spasmodic contraction of the hand muscles, induced by forcibly extending the hand at the wrist.
Best Answer: Motorcycles are generally louder because of the length of the exhaust system, comparatively to an automobile. The shorter you go, the louder you get.
Engineering Acoustics/Car Mufflers - Introduction. 1  A car muffler is a component of the exhaust system of a car. 2  1) Getting the hot and noxious gas from the engine away from the vehicle. 3  2) Reduce exhaust emission. 4  3) Attenuating the noise output from the engine. 5  The last specified function is the function of the car muffler.