Anatomy and Physiology Exam 3 (Chapter 10, 11, 12, 13) Questions and Answers
Anatomy and Physiology Exam 3 (Chapter 10, 11, 12, 13) Questions and Answers Skeletal muscle fibers are formed from embryonic cells called ________. Myoblasts Interactions between actin and myosin filaments of the sarcomere are responsible for ________. muscle contraction The delicate connective tissue that surrounds the skeletal muscle fibers and ties adjacent muscle fibers together is the ________. endomysium The area in the center of the A band that contains no thin filaments is the ________. band Active sites on the actin become available for binding after ________. H calcium binds to troponin
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