The document provides information about joints in the human body. It begins by defining a joint as the place where two or more bones meet. It then describes the three main types of joints - fixed/immovable joints, slightly moveable joints, and freely moveable/synovial joints. The document goes on to classify joints based on their structure and movement. It provides examples of different types of synovial joints like ball-and-socket, hinge, pivot, gliding, saddle, and condyloid joints. Images and descriptions of major joints like shoulder, elbow, hip, and knee are also included.