Q.

In voluntary contraction of the skeletal muscles, the muscle potential ranges from                  

A. 50 uV – 5 mV
B. 50 mV – 5 V
C. 0.05 uV – 2 mV
D. 50 mV – 500 mV
Answer» A. 50 uV – 5 mV
Explanation: In voluntary contraction of the skeletal muscles, the muscle potential ranges from 50 uV – 5 mV and duration from 2 to 15 ms. The values vary with the anatomic position of the muscle and the size and location of the electrode. In a relaxed muscle there are no action potentials.
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