Electric muscle stimulation is best described as:

• A. A method using electrical currents to stimulate nerves and muscles
• B. A method to measure resistance
• C. A method to reduce skin hydration
• D. A method to monitor heart rate

Answer: (A)

Electric muscle stimulation uses electrical currents to stimulate nerves and muscles, producing controlled muscle contractions. By placing electrodes on the skin, pulses depolarize motor nerves, causing the connected muscles to contract. This approach is used for therapies like strengthening, rehabilitation, and improving circulation. It’s not about measuring resistance, altering skin hydration, or monitoring heart rate, which is why the description focusing on stimulating nerves and muscles with electrical pulses is the correct one.