Fascicles are bundles of structures, often found in biological contexts. In anatomy, they refer to groups of muscle fibers or nerve fibers that are organized together. This arrangement allows for efficient communication and coordination within the body, as the fibers work collectively to perform specific functions. In botany, fascicles can describe clusters of leaves or flowers that grow closely together on a stem. This formation can enhance the plant's ability to capture sunlight or attract pollinators. Overall, fascicles play a crucial role in the organization and function of various biological systems, whether in muscle or plant structures.