9. Muscle Tissue

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?

What is the letter associated with the dark bands in a sarcomere?

In the sliding filament theory, what substance causes the actin filament to change shape, allowing myosin to bind?

What is the main component of thin filaments in the sarcomere?

What generates the force that shortens the sarcomeres to bring about muscle contraction?

According to the sliding filament model, binding sites on actin open when which of the following occurs?

Which of the following proteins makes up the thick filament of the sarcomeres?

Thin filaments are composed of how many strands of fibrous actin?

Which two proteins slide past each other in the sliding filament theory of muscle contraction?

What is the area in the center of the A band where there are no actin myofilaments?

What is the consequence if the myosin heads cannot bind to the actin during muscle contraction?