Medical Dictionary

tonus


tonus

noun to·nus \ˈtō-nəs\

Definition of TONUS

1
:  tone 2a
2
:  a state of partial contraction that is characteristic of normal muscle, is maintained at least in part by a continuous bombardment of motor impulses originating reflexly, and serves to maintain body posture—called also muscle tone; compare clonus
February 27, 2015
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