Final answer:
An articulation, or joint, is where two or more bones come together in the body and they are classified structurally as fibrous, cartilaginous, or synovial and functionally as synarthrosis, amphiarthrosis, or diarthrosis, based on their range of motion.
Step-by-step explanation:
An articulation, or joint, is the location at which adjacent bones or bone and cartilage come together to form a connection within the body. These structures are essential for movement and stability and are classified based on their structure and function. Structurally, joints can be fibrous, cartilaginous, or synovial, depending on the tissue connecting the bones and the presence of a joint cavity. Functionally, joints are classified by their range of motion, from immobile (synarthrosis), to slightly mobile (amphiarthrosis), to freely moveable (diarthrosis), which reflects the amount of movement they permit and their role in the body.