9. Muscle Tissue

What causes the release of calcium ions into the sarcoplasm from the terminal cisterns during muscle contraction?

What happens to a sarcomere during a myosin power stroke?

What causes the release of myosin heads from actin filaments after the power stroke in the sliding filament theory?

Which of the following occurs during cross-bridge cycling in the sliding filament theory?

What is the term applied to the functional zone between the Z lines in skeletal muscle tissue?

Which event occurs according to the sliding filament theory of muscle contraction?

In the sliding filament theory, what part of the myosin filaments binds to actin?

What is explained by the sliding filament theory?

Which statement best describes a sarcomere?

Which region of the sarcomere does not change in length during muscle contraction?

Which of the following best describes the term sarcomere?

In the context of the sliding filament theory, what is the shape of a myosin filament?

In the context of the sliding filament theory, what is a sarcomere and what role does the Z-line play?

In the sliding filament theory, what forms a cross-bridge within the sarcomere?

What changes occur in the sarcomere during muscle contraction?