ProMed EMT-4 Manual De Instrucciones página 43

manual_emt-4_270607 27.06.2007
The body has two different types of nerve fiber:
a) Unmyelinated nerve fibers with continuous,
slow relaying of stimuli
b) Myelinated nerve fibers with saltatory,
fast relaying of stimuli
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MOTOR (myelinated)
NERVE FIBERS (skeletal muscles)
Up to 10 Hz Single twitches
10 – 20 Hz Fibrillations
20 – 80 Hz Tetanic contractions
above 90 Hz Muscle waves
AUTONOMIC (unmyelinated)
NERVE FIBERS (smooth musculature, organs)
Below 10 Hz Stimulation of the vascular muscles
10 – 20 Hz Stimulation of the intestinal muscles*
* smooth musculature (muscles of the internal organs,
deep lying – involuntarily contracting muscles)
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