What components are joints composed of?

The correct response focuses on the specific elements that make up joints, which play critical roles in joint function and structure. Joints are primarily composed of cartilage, which provides cushioning and reduces friction between the bones at the joint. Synovial fluid, secreted by the synovial membrane, lubricates the joint and allows for smooth movement. Therefore, the components that accurately describe the makeup of joints include cartilage and synovial fluid.

The other provided options include some components that are related to movement and stability but do not accurately encompass what joints themselves are composed of. Tendons connect muscles to bones but aren't structural parts of the joint, while ligaments connect bones to other bones and also do not define the joint structure itself. Blood vessels and nerves, while important for supplying the joint with nutrients and facilitating sensory functions, are not components of the joint structure.