What is the tough elastic substance that cushions bones at the joints called?

The tough elastic substance that cushions bones at the joints is called cartilage. This specialized connective tissue serves several important functions within the body, particularly in the skeletal system. Cartilage provides a smooth, lubricated surface for bones to articulate against one another at joints, which effectively reduces friction and absorbs shocks during movement. Its unique structure allows it to withstand pressure and maintain its form, making it essential for joint health and mobility.

Tendons and ligaments, while also important in the musculoskeletal system, serve different purposes. Tendons connect muscles to bones, enabling movement when muscles contract, while ligaments connect bones to other bones at joints, providing stability and support to the skeletal structure. Connective tissue is a broader term that encompasses various types of tissues, including cartilage, and serves to support, bind, and protect other tissues and organs in the body. However, it doesn't specifically indicate the cushioning role at joints that cartilage fulfills.