What is the definition of a whole muscle?

The definition of a whole muscle refers to the structure that is made up of many fascicles bundled together. Fascicles are groups of muscle fibers that are wrapped in connective tissue, and when they gather in bundles, they create the complete muscle structure that is visible and functions as a single entity. This organization allows for coordination and strength during muscle contraction.

In contrast, a single fiber represents just one muscle cell, which does not encompass the full complexity or function of a whole muscle. A combination of muscle units and motor neurons describes the relationship between the nervous system and muscle activity but does not accurately define the physical structure of a whole muscle itself. Lastly, a network of tendons and ligaments pertains to connective tissues associated with muscles and joints but again does not encapsulate the muscle tissue itself. Thus, the option correctly identifies the anatomy of a whole muscle as composed of numerous bundled fascicles, which collectively contribute to a muscle's capability to contract and produce movement.