9. Muscle Tissue

What is the primary function of T-tubules in muscle cells?

In skeletal muscle fibers, which structure serves as the primary intracellular storage site for calcium ions (Ca2+) used to trigger contraction?

What is a striation in skeletal muscle, and how does it contribute to muscle cell function?

In the structure of a skeletal muscle, individual muscle fibers are arranged in bundles called what?

In the structure of a skeletal muscle, the membrane of the muscle fiber is called the:

In the structure of a skeletal muscle fiber, what is the name of the plasma membrane of the muscle fiber?

What structures make up the A bands in striated muscle?

Thick filaments in the sarcomere are primarily made of which protein?

Which of the following accurately describes the structure of a skeletal muscle?

Which protein is a thick filament involved in muscle contractions and contains heads that form cross-bridges?

What is the cause of the striated appearance of skeletal and cardiac muscle?

In the structure of skeletal muscle, the connective tissue structures that attach muscle to bone are called:

Which of the following correctly identifies the structure that surrounds each individual skeletal muscle fiber?

In the structure of a skeletal muscle fiber, which organelle stores calcium ions (Ca2+) for release during muscle contraction?

What protein primarily composes the thin filaments in the sarcomere according to the sliding filament theory?