Which option is deemed correct under the proposition that tetanic contractions are not set up by currents?

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Prepare for the REMBE Electrotherapy Test. Study with flashcards and multiple choice questions. Each question comes with hints and explanations. Master electrotherapy concepts and get ready for your exam!

Multiple Choice

Which option is deemed correct under the proposition that tetanic contractions are not set up by currents?

Explanation:
Tetanic contractions arise when stimulation is so frequent that individual muscle twitches fuse into a smooth, continuous contraction. In electrotherapy, this fusion is achieved with high-frequency current. Low-frequency stimulation produces separate twitches because the muscle has time to relax between impulses, so it does not form a sustained tetanus. Therefore, the mechanism that reliably produces tetanic contraction is a high-frequency current. The other options don’t produce the fused contraction on their own, so they don’t fit as the method for eliciting tetany.

Tetanic contractions arise when stimulation is so frequent that individual muscle twitches fuse into a smooth, continuous contraction. In electrotherapy, this fusion is achieved with high-frequency current. Low-frequency stimulation produces separate twitches because the muscle has time to relax between impulses, so it does not form a sustained tetanus. Therefore, the mechanism that reliably produces tetanic contraction is a high-frequency current. The other options don’t produce the fused contraction on their own, so they don’t fit as the method for eliciting tetany.

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