Final answer:
The three functional classifications of joints based on movement are synarthroses (immovable), amphiarthroses (partly movable), and diarthroses (freely movable).
Step-by-step explanation:
The functional classification of joints is based on the type and degree of movement they allow. There are three functional classifications of joints: synarthroses (immovable joints), amphiarthroses (partly movable joints), and diarthroses (freely movable joints).
- Synarthroses: These are immovable joints, typically found in areas where the bones are closely fitted together. Examples include the sutures in the skull.
- Amphiarthroses: These joints allow for slight movement and include connections like syndesmoses and symphyses.
- Diarthroses: These are freely movable joints, also known as synovial joints, which provide a wide range of motion and include various subtypes such as pivot, and ball-and-socket joints.