Final answer:
Cartilage acts as a cushion between bones by providing flexibility and support. It reduces friction and acts as a shock absorber, allowing for smooth movement of the bones.
Step-by-step explanation:
Cartilage acts as a cushion between bones by providing flexibility and support. It is a thin layer of connective tissue that covers the ends of bones at joints, known as articular cartilage. This cartilage reduces friction and acts as a shock absorber, allowing for smooth movement of the bones without causing damage or pain. For example, the articular cartilage in the knee joint allows for smooth bending and straightening of the leg without bone-on-bone contact.