muscle fascicle

A muscle fascicle is a bundle of smaller muscle fibers grouped together within a larger muscle. Think of it as a cluster of threads that are tightly packed and wrapped in a connective tissue covering. These fascicles work together to contract and generate force, allowing your muscles to move and perform various activities. The arrangement and size of fascicles can influence how strong or flexible a muscle is. Essentially, fascicles are the structural units within a muscle that coordinate to produce movement by shortening and contracting when your brain signals them.