What are types of joints and their functions?

Joints can be classified into three main types: fibrous, cartilaginous, and synovial. Fibrous joints, such as sutures in the skull, provide stability and minimal movement. Cartilaginous joints, like those between vertebrae, allow limited movement while providing support. Synovial joints, including the knee and elbow, offer a wide range of motion and are characterized by a fluid-filled cavity that reduces friction during movement.