Card 32 / 34: A single contraction of muscle fibers is a twitch. When a second stimulus occurs before the first twitch relaxes, the second will sort of piggyback on the first twitch and resulting in a greater contraction. This principle is called _________
A)
recruitment
B)
summation
C)
isometrics
D)
treppe
E)
tetanus
Answer:
B) summation
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