Why is the rate of muscle relaxation much slower

Reference no: EM13157285

Also can you answer the following questions?
1. how does direct electrical stimulation produce contractions of the muscle?
2. why doesn't the muscle respond to low stimulus voltages?
3. why does the amplitude of the muscle response increase with increasing stimulus voltages?
4. at high stimulus voltages, the muscle response reaches a maximum amplitude. why doesn't the muscle response continue to increase with increasing stimulus voltages?
for the second part:
1. if contraction amplitude is dependent upon the increase in concentration and persistence of intracellular calcium, why are the contraction amplitudes of single twitches the same?
2. tetanus requires high stimulus frequencies. what does this tell you about calcium re-uptake by teh sarcoplasmic reticulum?
3. why is the rate of muscle relaxation much slower after tetanus than after a single twitch?

Reference no: EM13157285

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