Examlex
Which of the following correctly expresses the speed of light in a vacuum?
Excitation-Contraction Coupling
Stimulation of a muscle fiber produces an action potential that results in contraction of the muscle fiber.
Troponin-Tropomyosin Complex
A regulatory protein complex in muscle cells that controls the interaction of actin and myosin, essential for muscle contraction.
Myosin Heads
The part of the myosin protein that binds to actin filaments and performs the power stroke to cause muscle contraction.
Cross-Bridges
The connections formed between actin and myosin filaments in muscle fibers during contraction.
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