The functional joints are classified on the basis of the degree of movement

es, that's correct. Functional joints are classified based on the degree of movement they allow between the bones that make up the joint. There are three main categories of functional joints:

Synarthroses: These are immovable joints that allow little or no movement between the bones. They are held together by fibrous connective tissue and are found in the skull, where they help protect the brain.

Amphiarthroses: These are slightly movable joints that allow limited movement between the bones. They are held together by cartilage or fibrous connective tissue and are found in the spine, where they provide flexibility and shock absorption.

Diarthroses: These are freely movable joints that allow a wide range of movement between the bones. They are held together by a joint capsule and are found in the limbs, where they allow for movement and mobility.

Diarthroses are further classified into six subcategories based on the type of movement they allow:

Ball-and-socket joints
Hinge joints
Pivot joints
Ellipsoidal joints
Saddle joints
Gliding joints
Each of these subcategories has a unique structure that allows for specific types of movement and plays an important role in our overall mobility and physical function.