During muscle contraction, _________. A. The actin heads pull the sarcomere closed; B. Myosin attaches to actin,
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During muscle contraction, _________.
A. The actin heads pull the sarcomere closed;
B. Myosin attaches to actin, pulls it toward the center of the sarcomere, releases it, and reattaches farther along;
C. Myofibrils shrink due to the actions of testosterone;
D. Muscle fibers contract under the actions of testosterone
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Related Book For
Biology Science For Life With Physiology
ISBN: 9780134555430
6th Edition
Authors: Colleen Belk, Virginia Maier
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