The heads of the myosin filaments are called ___ when they link the thin and thin filaments together

What is the function of Ca⁺⁺ during a skeletal muscle contraction?

D on the image would be

The protein that covers the binding site on actin when a muscle is relaxed is called

This structure stores calcium in the muscle cell

The A band contains which type of filaments

Which of the following occurs When ATP binds to the myosin head?

Which of the following decreases during muscle contraction?

Ca⁺⁺ will be released from the sarcoplasmic reticulum when

The power stroke will occur when

What ion in the neuromuscular junction causes an action potential to travel along the sarcolemma?

the functional contractile unit within a muscle fiber is called the

the cytoplasm of a muscle cell is called the

Structure B is known as the thin filaments of the sarcomere, what is another name for the thin filaments?