Which of the following terms means "the simple, quick, and spasmodic contraction of small muscle units"?

Name: Which of the following terms means "the simple, quick, and spasmodic contraction of small muscle units"?
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A twitch is a quick and simple contraction of muscles, typically involving small muscle units. It is characterized by a rapid onset and a short duration, differentiating it from other forms of muscle contractions such as tetanus or summation.

Which of the Following Terms Means "The Simple, Quick, and Spasmodic