What is the main function of cartilage in the joints?

The primary function of cartilage in the joints is to act as shock absorbers. Cartilage is a flexible and semi-rigid tissue that lines the surfaces of joints, providing a smooth surface for bones to glide over one another. This cushioning effect helps to absorb impact during movement and reduces friction between the bones, which is crucial during activities such as walking, running, or jumping. By doing so, cartilage plays a vital role in joint health and stability, preventing wear and tear on the underlying bone and minimizing pain during movements.

While other options address functions important in the body, they do not pertain to the specific role of cartilage within joints. Transmitting nerve signals is a function of nerve tissues, while supporting blood circulation relates to the cardiovascular system. Enhancing muscle movement involves muscle tissue rather than cartilage. Thus, the function of cartilage as shock absorbers is integral to maintaining joint integrity and overall musculoskeletal health.