Which structure covers the ends of long bones where they meet joints?

The correct choice pertains to the tissue that plays a crucial role in joint function. Articular cartilage is the smooth, white tissue that covers the ends of long bones where they form joints. This specialized cartilage provides a cushioning effect, reducing friction and allowing for smooth movement of the bones relative to each other during joint motion. It helps protect the underlying bone and absorbs shocks, which is vital for preventing damage to the structures involved in joint movement.

Understanding the function of articular cartilage is essential when considering conditions that can affect joint health, such as arthritis, where the cartilage may wear down, leading to pain and decreased mobility. The role of articular cartilage is fundamental in maintaining joint integrity and function throughout a person's life.