9. Muscle Tissue

Which of the following is most directly required to initiate the coupling of myosin to actin in the sliding filament theory?

What is the role of calcium in the cross-bridge cycle during muscle contraction?

Which of the following best describes the term 'Z line' in the context of the sliding filament theory and the sarcomere?

In the sliding filament theory, what causes the myosin head to disconnect from actin?

What happens when a myosin head releases from actin during muscle contraction?

What happens when troponin and tropomyosin block the active sites of actin in the sarcomere?

In the context of sliding filament theory, what is the basic functional (contractile) unit of skeletal muscle?

What does the sliding filament model describe during muscle contraction?

What is the sliding filament model of muscle contraction?

In the sliding filament theory, a myosin head binds to which molecule to form a cross bridge?

What is the role of tropomyosin in muscle contraction?

In the context of the sliding filament theory, which filament is thicker within the sarcomere?

What is the smallest functional unit of a muscle contraction?

What are the two main protein filaments involved in the sliding filament theory within a sarcomere?