​The Sliding-Filament Model of Muscle Contraction Is Described by the Action

question 13

Multiple Choice

​The sliding-filament model of muscle contraction is described by the action of ____ pulling ____ inward.

• A) ​muscle fibers; actin filaments
• B) ​myofilaments; sarcomeres
• C) ​sarcomeres; Z lines
• D) ​actin filaments; myosin filaments
• E) ​myosin filaments; actin filaments

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