71210 Bioelectromagnetism - Exercises Autumn 2004

Functional Electric Stimulation

1. What is FES?
   1. Use of healing herbs
   2. Federal Emergency Services
   3. Electric stimulation of biological tissue
2. When stimulating, what happens at the electrode electrolyte boundary?
   1. Electrons are replaced as charge carriers to ions
   2. Under threshold, nothing
   3. Electric arc is created
3. In FES, motor neurons are stimulated instead of muscle cells directly. Why is this?
   1. Motor neurons are located closer to the skin
   2. Motor neurons require less stimulus energy
   3. Muscles are too large to be stimulated
4. One aims to gain muscle mass. This may be obtained by weight training using heavy loads and few repetitions instead of several repetitions and light weights because
   1. in that case oxygen delivery to the muscles is at maximum
   2. different types of muscle fibers are activated by different work load
   3. exercise does have to hurt - "no pain, no gain"

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