Definition
A fascicle is a bundle of muscle or nerve fibers ensheathed in connective tissue called perimysium 💪. It's a structural unit within a larger muscle or nerve. Think of it like a small group of bundled straws inside a larger package. Each fascicle contains multiple individual fibers, working together to perform a specific function. In muscles, fascicles contribute to overall muscle strength and movement. In nerves, they ensure efficient transmission of signals. Fascicles are like the building blocks of muscles and nerves.