The ends of a long bone are known as the epiphyses.
Each long bone has two epiphyses: one at each end. The epiphysis is typically wider than the shaft (the long, straight portion of the bone). This structure is essential for joint movement and helps in the formation of joints with adjacent bones. The epiphyses are covered with a thin layer of cartilage that helps to reduce friction and absorb shock. Additionally, these regions are crucial for the growth of the bone during development, as they contain the growth plates (or epiphyseal plates).