fasciclea
A fascicle is a small bundle or cluster of structures, most commonly referring to a bundle of muscle fibers or nerve fibers. In anatomy, a fascicle is a distinct unit within a larger organ, such as a muscle. Muscle fascicles are groups of muscle cells (myocytes) that are bundled together by connective tissue called the perimysium. The arrangement of these fascicles within a muscle influences its strength and range of motion. For example, parallel fascicles run along the length of the muscle, while pennate fascicles are arranged at an angle to the tendon.
Similarly, in the nervous system, a fascicle can refer to a bundle of axons, which are the