9. Muscle Tissue

What are thin filaments in the sarcomere primarily composed of?

What causes the striated appearance of skeletal muscle fibers?

Which of the following best describes the term sarcoplasmic reticulum?

Which structure in the muscle cell stores calcium?

In the structure of a skeletal muscle, the epimysium surrounds which of the following?

What structures form a motor unit?

In the structure of skeletal muscle, what is a muscle fascicle?

In the structure of a skeletal muscle, a bundle of muscle fibers is known as a(n):

Which of the following surrounds an individual muscle cell?

Thin filaments are primarily composed of which protein?

In skeletal muscle fibers, which structure serves as the primary intracellular storage site for calcium ions (Ca$2^{+}$) used during contraction?

In the structure of a skeletal muscle, what connective tissue structure attaches skeletal muscle to bone?

In the structure of a skeletal muscle fiber, which organelle stores calcium ions ($C^2$) and releases them to initiate contraction?

In the structure of skeletal muscle, what is the term for a bundle of muscle fibers (muscle cells) surrounded by perimysium?