9. Muscle Tissue

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?

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?

Within a sarcomere, the overlap of actin and myosin filaments produces which band?

Which region of the sarcomere gives rise to the structure known as the Z line?

In the context of the sliding filament theory, what is the H zone within a sarcomere?

What is the part of a sarcomere that contains only thin filaments?

The sliding filament theory explains how muscles contract. Which of the following best describes this process?