Cartilage is a flexible and smooth tissue found in various parts of the body, including the joints, ears, and nose. It acts as a cushion between bones, helping to reduce friction and absorb shock during movement. This makes it essential for activities like walking, running, and jumping, as it allows for smoother motion. There are different types of cartilage, such as hyaline cartilage, which is the most common and provides support while allowing for some flexibility. Another type is elastic cartilage, found in structures like the ear, which needs to maintain its shape. Overall, cartilage plays a crucial role in maintaining the body's structure and function.