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.
A die-cast Screaminâ EagleÂ® medallion and a selection of end cap designs (sold separately) are available to provide an extra custom touch. Screaminâ EagleÂ® Street Cannon Performance Slip-On Mufflers fit 50-state 2009-later Touring and Trike models, except 2010 Street GlideÂ® and Road GlideÂ® Custom and models equipped with 110 CI engines. Installation requires separate purchase of muffler clamps and end caps. For more information, visit Harley-Davidsonâs Website.