The document discusses different types of joints in the body, including synovial joints. It provides questions and answers about classifying joints based on their structure and function. Specifically, it examines synovial joints in more detail, describing their features like a joint cavity, cartilage, and ligaments. It also explores different types of synovial joints and examples of selected synovial joints in the body like the shoulder, hip, knee, and temporomandibular joint.