What are the main components of skeletal muscle?

The main components of skeletal muscle include muscle fibers, connective tissue, blood vessels, and nerves, which is why the second choice is correct.

Muscle fibers, also known as myofibers, are the contractile units of skeletal muscle and are responsible for its ability to generate force and facilitate movement. These fibers are organized into bundles and surrounded by connective tissue, which provides structural support and stability.

Connective tissue plays a crucial role in maintaining the integrity of the muscle structure, with layers such as endomysium (surrounding individual fibers), perimysium (surrounding bundles of fibers), and epimysium (encasing the entire muscle). This organization not only supports muscle function but also allows for efficient force transmission to the tendons and bones.

Blood vessels are essential for supplying oxygen and nutrients to the muscle fibers while also removing metabolic waste products. This is vital for muscle health and performance. Nerves are involved in the control and coordination of muscle contractions, allowing for voluntary movement and response to stimuli.

The other choices lack one or more of these essential components. For example, suggesting only muscle fibers and nerves would ignore the critical role of connective tissue and blood supply in muscle function. While mitochondria are important within