★ Muscles and Movements Quiz
___ and ___ are regulatory proteins bound to actin.
A. Troponin and tropomyosin
B. Myosin and actin
C. Calcium and Oxygen
D. Glycogen and hemoglobin
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What is the definition of atrophy?
A. Reduction in size or wasting away of an organ or tissue
B. The ability of a muscle to shorten forcibly when stimulated
C. An increase in the size of a tissue or organ
D. The ability to stretch a material beyond its resting length
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