Question

distinguish between a skeletal muscle and a skeletal muscle fiber.

Explanation:

Define skeletal muscle

A skeletal muscle is an entire organ composed of thousands of muscle fibers, connective tissue sheaths (epimysium, perimysium, endomysium), blood vessels, and nerves.

Define skeletal muscle fiber

A skeletal muscle fiber is a single, multinucleated muscle cell wrapped in its own plasma membrane (sarcolemma) and surrounded by endomysium.

Distinguish the structural relationship

A skeletal muscle represents the organ level of organization, whereas a skeletal muscle fiber represents the cellular level of organization (a single cell within that organ).

Answer:

A skeletal muscle is an entire organ composed of multiple tissue types (including muscle tissue, connective tissues, nerves, and blood vessels), whereas a skeletal muscle fiber is a single, individual muscle cell within that organ.