Twitch Summation

question 80

Multiple Choice

Twitch summation

• A)is a means by which gradation of muscle contraction may be accomplished
• B)results from the additional release of Ca₂₊ within the cytosol of muscle fibers
• C)results from increasing the frequency at which motor units are firing within a muscle
• D)results from more cross bridges binding to actin within muscle fibers
• E)has all of the above characteristics